CVE-2026-103410

Session Smart Router: Integer overflow causes denial of service during TLS certificate inspection

An Integer Overflow vulnerability in the DPI certificate scanner in Juniper Networks Session Smart Router allows an unauthenticated remote attacker to cause a denial of service via a specially crafted TLS server certificate.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Juniper

Products

Session Smart Router

CVE-2026-116774

russh: peer-declared zero maximum packet size permanently stalls channel writes (silent AsyncWrite hang)

russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.60.0 until 0.65.0, channel-open parsing accepts a peer-declared maximum_packet_size of zero and passes it into ChannelTx::poll_writable in russh/src/channels/io/tx.rs. The Channel::data, Channel::make_writer, and Channel::into_stream asynchronous write paths then calculate a writable size of zero and remain pending forever because window adjustments cannot satisfy a static zero packet maximum. An authenticated client can strand server writes, and a malicious server can strand client writes, allowing affected tasks, channels, and connections to accumulate without surfacing an error. This issue is fixed in version 0.65.0.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Eugeny

Products

Russh

CVE-2026-99186

x86/insn-eval: Fix shadowed segment index in get_seg_reg_override_idx()

In the Linux kernel, the following vulnerability has been resolved: x86/insn-eval: Fix shadowed segment index in get_seg_reg_override_idx() Commit 45e1dccc0653 ("x86/insn: Simplify for_each_insn_prefix()") made for_each_insn_prefix() declare its own loop counter named idx. get_seg_reg_override_idx() keeps its result in a local of the same name, so the assignments in the loop body now write the loop counter: - the function always returns INAT_SEG_REG_DEFAULT, so FS and GS overrides are ignored; - a CS override sets the counter to INAT_SEG_REG_CS (2), the increment makes it 3, and prefixes.bytes[3] holds the last prefix, 0x2e again, so the loop never terminates. The UMIP emulation reaches this from the #GP handler for user space: an SGDT, SIDT or SMSW with a memory operand and a CS prefix leaves the task spinning in the kernel, never returning to user space, with a SIGKILL that is never delivered. Any user can thus tie up CPUs until reboot. With an FS or GS prefix, the emulated result is written to the wrong address. Rename the internal macro iterator variable. [ Lukas' original patch renamed the use site, I changed it to rename the iterator in the macro instead, but left Lukas' commit message and authorship - Linus ]

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Linux Kernel

CVE-2026-63575

PKCS#12 key derivation loops about 2^32 times on a zero or negative iteration count

Loop with unreachable exit condition in the PKCS#12 key derivation (Pkcs12ParametersGenerator) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a PKCS#12 (PFX) file, or a PKCS#8 encrypted private key that uses a PKCS#12 password-based encryption algorithm, to cause a denial of service through CPU exhaustion via an iteration count of zero or below, because the derivation loop ran until its counter equalled the count, so for such a count it wrapped through about 2^32 iterations before the MAC or the password could be checked. A 75-byte PFX file with a negative MacData iteration count kept Pkcs12Store.Load busy for many minutes.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Bouncycastle Legion Of The Bouncy Castle Inc.

Products

Bc-csharp Bc-csharp

CVE-2026-113650

ApostropheCMS sanitize-html: unbounded recursion when re-sanitizing the fallback of a discarded iframe (stack overflow, nestingLimit not enforced)

ApostropheCMS is an open-source Node.js content management system. In sanitize-html 2.18.0, when an <iframe> is not allowed and disallowedTagsMode is 'discard' (the defaults), its raw-text content is re-sanitized by a recursive call to sanitizeHtml(text, options). The recursion has no bound and starts each nested call with a fresh state. This vulnerability is fixed in 2.18.1.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Apostrophecms

Products

Apostrophecms Sanitize-html

CVE-2026-63570

Pkcs12Store.GetCertificateChain loops forever on cyclic issuer links

Loop with unreachable exit condition in Pkcs12Store.GetCertificateChain in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a crafted PKCS#12 file to an application that loads it and requests a key entry's certificate chain to cause a denial of service, in which the call never returns and consumes CPU and memory until an OutOfMemoryException, via certificates whose issuer links form a cycle, for example two certificates whose AuthorityKeyIdentifier extensions each identify the other's public key. This happens because the chain-building loop stops only when no issuer is found or a certificate links to itself, and keeps no record of certificates already visited. The key-identifier links are followed without checking signatures.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Bouncycastle Legion Of The Bouncy Castle Inc.

Products

Bc-csharp Bc-csharp

CVE-2026-112406

Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Python Python-pillow

Products

Pillow Pillow

CVE-2026-112895

Pillow: Unbounded recursion parsing a PDF page tree or trailer chain (incomplete fix for CVE-2026-42310)

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can exhaust resources while parsing an existing PDF during an append operation. PdfParser follows page-tree child references without cycle or duplication tracking and follows previous-trailer chains with only an exact repeated-offset guard, so deep or cyclic page trees and long chains of unique trailer offsets can exhaust the Python stack. Repeated non-cyclic /Kids references can also cause super-linear CPU and memory use. An attacker can supply such a PDF to an application that calls Image.save with PDF append enabled. This can raise an uncaught RecursionError or consume excessive CPU and memory before output is written, causing denial of service. This issue is fixed in version 13.0.0.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Python Python-pillow

Products

Pillow Pillow

CVE-2026-98886

drm/gma500: return errors from Oaktrail HDMI I2C reads

In the Linux kernel, the following vulnerability has been resolved: drm/gma500: return errors from Oaktrail HDMI I2C reads xfer_read() waits for the HDMI I2C transaction to reach I2C_TRANSACTION_DONE, but it ignores both timeout and signal returns from wait_for_completion_interruptible_timeout(). If the interrupt never advances the transaction state, the loop can wait forever. Return -ETIMEDOUT when the completion wait expires, propagate interrupted waits, and make the I2C master_xfer callback return the first transfer error instead of reporting a successful message count.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Linux Kernel

CVE-2026-107621

J4Care dcm4che Loop with Unreachable Exit Condition

JPEGParser can enter an infinite loop while parsing a specially crafted or truncated stream.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

J4care

Products

Dcm4chee-arc-light

CVE-2026-111074

JITServer: Pre-authentication remote Denial of Service via integer overflow infinite loop in MessageBuffer::computeRequiredCapacity()

In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component is vulnerable to a pre-authentication remote denial of service. When processing the initial 4-byte length field of an incoming TCP connection, an integer overflow in `MessageBuffer::computeRequiredCapacity()` causes the receiving compilation worker thread to enter an infinite loop consuming ~100% CPU. An unauthenticated remote attacker can exploit this by opening a small number of crafted TCP connections to exhaust the entire worker thread pool, silently halting compilation services for all connected client JVMs.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Eclipse

Products

Eclipse Openj9

CVE-2026-8318

VectifyAI PageIndex PDF Table of Contents page_index.py toc_transformer infinite loop

A security flaw has been discovered in VectifyAI PageIndex up to f50e52975313c6716c02b20a119577a1929decba. Affected by this vulnerability is the function toc_transformer of the file pageindex/page_index.py of the component PDF Table of Contents Handler. The manipulation results in infinite loop. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Vectifyai

Products

Pageindex

CVE-2026-115269

HTTP/2 WINDOW_UPDATE and SETTINGS frames reset the request body read timeout in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in the HTTP/2 request body reader of mtrudel bandit allows an unauthenticated remote attacker to hold stream processes open indefinitely via WINDOW_UPDATE or empty SETTINGS frames sent while a Plug reads the request body. Bandit.HTTP2.Stream.do_read_data/4 in lib/bandit/http2/stream.ex waits for each frame with a fresh read_timeout. A stream WINDOW_UPDATE, or the zero-delta window update that every empty SETTINGS frame delivers to all streams, ends the wait without delivering any body data, and the loop starts a new full countdown. A client that sends one of these 9-byte frames before each countdown expires keeps read_body blocked, together with the stream process and whatever the application holds while reading, for as long as it likes. This issue affects bandit: from 1.4.0 before 1.14.0.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Mtrudel

Products

Bandit

CVE-2026-98894

drm/amd/ras: reset CPER ring on corrupt entry size

In the Linux kernel, the following vulnerability has been resolved: drm/amd/ras: reset CPER ring on corrupt entry size When CPER ring overflow handling advances the read pointer, it trusts the parsed entry size from the current ring contents. Corrupt CPER data can produce an entry size that does not advance rptr after dword conversion and pointer masking. In that case the recovery loop keeps testing the same location while holding the CPER ring mutex. This can hang the worker that is writing the next CPER record. Detect a no-progress rptr update and reset the CPER ring to an empty state instead. This drops the corrupt contents and lets the writer leave the recovery path without spinning.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Linux Kernel

CVE-2026-56289

Loop with Unreachable Exit Condition in GNU patch

GNU patch is vulnerable to a denial of service (DoS) due to improper validation of hunk (single block of changes in diff) line offsets in unified-diff input. A specially crafted patch can specify an extremely large line number, causing the application to enter an effectively infinite processing loop while attempting to locate the requested position. This results in excessive CPU consumption and prevents the process from completing. An attacker can trigger this behavior by supplying a malicious patch file, causing the utility to become unresponsive and require manual termination. This issue has been fixed in the commit faba04ef4f2b410257f76c1b9dc85e350929c4b9

CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Gnu

Products

Patch

CVE-2026-106116

ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, ExifReader.ReadValues64 trusts the 64-bit BigTIFF IFD entry count and iterates once per declared entry. When fewer than 20 bytes remain, ExifReader.ReadValue64 returns without advancing the stream or terminating the outer loop, so a small malformed BigTIFF can keep one decoder thread executing for an attacker-controlled duration. This report does not claim worker-pool exhaustion. This issue is fixed in version 4.1.2.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Sixlabors

Products

Imagesharp

CVE-2026-112390

Pillow: Infinite loop in MIC n_frames when the embedded TIFF

Pillow is a Python imaging library. From 7.2.0 until 13.0.0, Pillow can enter an infinite loop while determining the frame count of a MIC image. MicImageFile inherits TIFF frame traversal, but MicImageFile.tell reports the OLE stream index and its seek() resets TIFF frame state, so an embedded TIFF with at least three IFDs never advances. When an application with olefile installed reads n_frames or saves all frames from a crafted MIC file, the non-advancing traversal can hold a worker at full CPU indefinitely. This issue is fixed in version 13.0.0.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Python Python-pillow

Products

Pillow Pillow

CVE-2026-112391

Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tree()

Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow's PdfParser.get_value() can recurse without a limit while reading nested PDF objects. The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append. An attacker can provide a deeply nested PDF to an application that saves an image with PDF append enabled. This can raise an uncaught RecursionError or terminate the worker, causing denial of service. This issue is fixed in version 13.0.0.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Python Python-pillow

Products

Pillow Pillow

CVE-2026-96596

erl_tar:extract/2 loops forever on a GNU sparse member with a trailing hole

Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Erlang OTP stdlib (erl_tar module), hexpm hex_core (hex_erl_tar module), hexpm hex (mix_hex_erl_tar module) and erlang rebar3 (r3_hex_erl_tar module) allows an attacker who supplies a tar archive to cause a denial of service via a crafted GNU sparse member. When erl_tar:extract/1,2 writes a member to disk, erl_tar:stream_to_file_loop/3 reads it in chunks of 65536 bytes by default. For a GNU sparse member whose sparse map ends before its real size, erl_tar:do_sparse_read/3 matches its trailing-hole clause before its zero-length clause. After the chunk is used up, the trailing-hole clause reads zero bytes, does not advance the position, and recurses forever. A 2048-byte archive keeps the extracting process and one scheduler busy until the process is killed. The {max_size, N} option prevents this only when N is below the real size of the member. Extraction with the memory option is not affected. hex_core ships its own copy of erl_tar as hex_erl_tar, and Hex and rebar3 ship hex_core with prefixed module names (mix_hex_erl_tar and r3_hex_erl_tar). These copies contain the same code and do not call stdlib's erl_tar, so they are affected on any OTP version. OTP 28 is not affected, but an application running on OTP 28 is affected if it extracts archives through an affected version of hex_core, Hex or rebar3. This issue affects OTP from OTP 29.0 before OTP 29.1.2, corresponding to rebar3 from 3.27.1 before 3.28.0, and stdlib from 8.0 before 8.1.1, and hex from 2.4.2 before 2.5.3; hex_core: from 0.14.0 before 0.20.1.

CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Erlang Hexpm

Products

Erlang/otp Erlang\/otp Rebar3 and 2 more

CVE-2026-100354

kin-openapi: Uncontrolled Recursion on Circular allOf/anyOf/oneOf Schemas Causes Fatal Process Crash

kin-openapi is a Go project for handling OpenAPI files. Prior to 0.149.0, runtime request, response, and direct schema validation lacks cycle detection when an allOf, anyOf, or oneOf chain refers back to an ancestor schema, even though loading and document validation accept the circular reference. A request or response that reaches the affected schema causes unbounded recursion in Schema.visitJSON or openapi3filter.decodeValue and exhausts the Go goroutine stack. The resulting fatal stack overflow cannot be caught with recover and terminates the entire process, including unrelated requests. This issue is fixed in version 0.149.0.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Getkin

Products

Kin-openapi