CVE-2026-128344

ExcelJS through 4.4.0 Memory Exhaustion via Oversized Image Anchor Column

ExcelJS through 4.4.0 contains a memory exhaustion vulnerability that allows attackers to crash applications by supplying a workbook with an unbounded image anchor column in the drawing part. Attackers can set an anchor column such as 300000000 in xl/drawings/drawing1.xml so reading getImages() anchor positions makes Worksheet.getColumn allocate millions of Column objects and abort with a heap out-of-memory error.

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

Vendors

Exceljs Project

Products

Exceljs

CVE-2026-126613

Allocation of Resources Without Limits or Throttling in hMailServer

Allocation of resources without limits in the JSON reader of Progressive Robot hMailServer 6.3.2 through 6.3.7 allows a remote attacker to exhaust the server's memory and hold its threads, making mail delivery, the REST API and the webmail unavailable. The reader built a tree of values far larger than the text it read, copying each value into every level above it, and set no bound on the number of values, so a single JSON document of many small values, within the 16 MB the server reads, raised the service's memory by about 2 GB and held one thread for seconds to minutes. From 6.3.4 a remote unauthenticated attacker reaches the reader by mailing such a document as a TLS-RPT report, up to 16 MB once decompressed, to a hosted domain's report mailbox, where an administrator has set one; it is read on a mail delivery thread (ten by default), and those threads deliver all mail, local and outbound. From 6.3.4 it is also reached without an account through the reply to a password-protected message, with the message's link alone, where the REST API is on (it is off by default) and a public base URL for such links is set; and by any account, from 6.3.2 through the webmail's send and draft routes and from 6.3.4 through its other routes granted 16 MB and the send API; the webmail's send, draft and settings routes parsed the body again for each member read. The REST API serves every request on four worker threads, in the process that also serves SMTP, IMAP and POP3, so a few such documents at once make it unavailable and can exhaust the machine's memory and end the whole service. This is a separate defect from CVE-2026-107574, the reader's handling of duplicate member names, fixed in 6.3.6.

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

Vendors

Progressive Robot

Products

Hmailserver

CVE-2026-68539

fulgur: Unbounded string-set value accumulation causes memory/CPU exhaustion (denial of service)

fulgur converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. From version 0.4.4 to before version 0.29.0, the CSS string-set named-string values resolved from a document were accumulated per element with no memory budget, letting a small crafted document amplify into large retained memory (and the CPU to copy it) — results in a denial of service. This issue has been patched in version 0.29.0.

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

Vendors

Fulgur-rs

Products

Fulgur

CVE-2026-81843

Memory exhaustion denial of service in Elasticsearch data source index patterns

Grafana is an open-source platform for monitoring and observability. When an Elasticsearch data source is configured with a time-based index pattern, Grafana generated one index name for every interval in the requested query time range without any upper limit. A user with permission to query the data source, which includes users holding only the Viewer role in a default configuration, could submit a single small query with an extreme time range and cause the server to allocate memory until it was terminated. The allocation occurred before any request was sent to Elasticsearch, so the condition applied whether or not the Elasticsearch cluster was reachable. Data sources configured with a static index name are not affected.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Grafana

Products

Elasticsearch Datasource Grafana Grafana Enterprise

CVE-2026-126659

BlueprintUE Self-Hosted Edition 1.0.0 before 4.3.5 Storage Exhaustion via Anonymous Blueprints

BlueprintUE Self-Hosted Edition 1.0.0 before 4.3.5 contains a resource exhaustion vulnerability that allows unauthenticated attackers to fill server storage by repeatedly creating anonymous blueprints. Attackers can send large requests to HomeController::doProcessCreateBlueprint() with a 'never' expiration, bypassing purges to fill the disk and deny service.

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

Vendors

Blueprintue

Products

Blueprintue-self-hosted-edition

CVE-2026-64861

Probo: GraphQL Alias-Based Application Layer Denial of Service (DoS)

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.222.0, the GraphQL endpoint does not enforce restrictions on alias count, query depth, or query complexity. An attacker can send a single request containing thousands of aliased resolver calls, causing excessive server-side resource consumption and service degradation. This issue has been patched in version 0.222.0.

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

Vendors

Getprobo

Products

Probo

CVE-2026-128066

Pillow: Memory DoS in TIFF and EXIF IFD parsing via overlapping tag data

Pillow is a Python imaging library. From 1.0 through 12.3.0, ImageFileDirectory_v2.load() in src/PIL/TiffImagePlugin.py retains a separate bytes object for each out-of-line IFD tag value without limiting the total data read or preventing distinct tags from referencing the same file region. A small crafted TIFF or EXIF-bearing JPEG, PNG, WebP, or MPO can therefore cause memory use quadratic in the input size. TIFF and some JPEG paths trigger parsing during Image.open(), while other formats are exposed when EXIF is requested, including through getexif() or ImageOps.exif_transpose(). The declared pixel dimensions do not bound this metadata allocation, so decompression-bomb checks do not prevent process memory exhaustion. This issue is fixed in version 13.0.0.

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

Vendors

—

Products

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CVE-2026-126366

msgpack-java JRuby decoder allocates from declared header counts with no cap: 5-byte message forces multi-GiB OOM

MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.7, the Java-platform msgpack gem for JRuby allocated arrays and byte buffers directly from attacker-controlled array32, str32, and bin32 declared sizes before confirming that corresponding elements or bytes were available. A short MessagePack header could therefore trigger a very large allocation or sustained heap growth when an application decoded untrusted input through MessagePack.unpack or MessagePack::Unpacker, potentially exhausting the shared JVM heap. map32 and declared counts at or above 2^31 did not use the affected allocation behavior. This issue is fixed in version 1.8.7.

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

Vendors

—

Products

—

CVE-2026-95784

System Component Vulnerability Could Cause Service Unavailability

A vulnerability exists in a system component that may, under certain conditions, disrupt the availability of affected services. Successful exploitation could result in temporary service interruption or loss of functionality.

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

Vendors

—

Products

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CVE-2026-114369

Security Issue CVE-2026-114369 - Resource exhaustion (denial of service) vulnerability in the WebSocket handshake handling of QWebSocket and QWebSocketServer impacts Qt Framework

Resource exhaustion vulnerability in the Qt Framework QWebSocket and QWebSocketServer classes of the Qt WebSockets module

CVSS 4.0 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Qt

Products

Qt Qt Framework Qtwebsockets

CVE-2026-62126

WordPress SAML SP Single Sign On plugin <= 6.1.0 - Denial of Service Attack vulnerability

Allocation of Resources Without Limits or Throttling vulnerability in miniOrange SAML SP Single Sign On miniorange-saml-20-single-sign-on allows HTTP DoS.This issue affects SAML SP Single Sign On: from n/a through 6.1.0.

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

Vendors

Miniorange Wordpress-extensions

Products

Saml Sp Single Sign On Saml Sp Single Sign On

CVE-2026-121370

Security Advisory 0224

On affected platforms running Arista EOS with Precision Time Protocol (PTP) configured, an unauthenticated attacker with network access to a PTP-enabled port can create a denial of service (DoS) condition by sending traffic to the system.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Vendors

Arista

Products

Eos

CVE-2026-123868

Node.js is vulnerable to an HTTP/2 memory exhaustion denial of service via unaccounted inbound DATA on an undrained stream

An unauthenticated HTTP/2 client can exhaust Node.js server memory because inbound DATA queued on an undrained stream is charged to no session budget. Each inbound DATA frame creates one JavaScript Buffer view in the receiving stream's readable queue, but nothing charges that queue to current_session_memory_: the socket read buffer is accounted only during parsing and released immediately, so whatever stays queued is accounted to nothing. A peer that fills a stream's receive window with one-byte DATA frames pays about 10 wire bytes per frame while the server retains about 114 bytes per frame, so a single stream on one connection can retain hundreds of megabytes from tens of megabytes sent. maxSessionMemory neither bounds the growth nor refuses new streams, because Http2Session::CanAddStream gates admission on the same counter that never sees the queue. This vulnerability affects Node.js 26.x and 24.x.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Nodejs

Products

Nodejs

CVE-2026-63981

net/sched: act_mirred: Fix blockcast recursion bypass leading to stack overflow

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_mirred: Fix blockcast recursion bypass leading to stack overflow tcf_mirred_act() checks sched_mirred_nest against MIRRED_NEST_LIMIT (4) to prevent deep recursion. However, when the action uses blockcast (tcfm_blockid != 0), the function returns at the tcf_blockcast() call BEFORE reaching the counter increment. As a result, the recursion counter never advances and the limit check is entirely bypassed. When two devices share a TC egress block with a mirred blockcast rule, a packet egressing on device A is mirrored to device B via blockcast; device B's egress TC re-enters tcf_mirred_act() via blockcast and mirrors back to A, creating an unbounded recursion loop: tcf_mirred_act -> tcf_blockcast -> tcf_mirred_to_dev -> dev_queue_xmit -> sch_handle_egress -> tcf_classify -> tcf_mirred_act -> (repeat) This recursion continues until the kernel stack overflows. The bug is reachable from an unprivileged user via unshare(CLONE_NEWUSER | CLONE_NEWNET): user namespaces grant CAP_NET_ADMIN in the new network namespace, which is sufficient to create dummy devices, attach clsact qdiscs with shared blocks, and install mirred blockcast filters. BUG: TASK stack guard page was hit at ffffc90000b7fff8 Oops: stack guard page: 0000 [#1] SMP KASAN NOPTI CPU: 2 UID: 1000 PID: 169 Comm: poc Not tainted 7.0.0-rc7-next-20260410 RIP: 0010:xas_find+0x17/0x480 Call Trace: xa_find+0x17b/0x1d0 tcf_mirred_act+0x640/0x1060 tcf_action_exec+0x400/0x530 basic_classify+0x128/0x1d0 tcf_classify+0xd83/0x1150 tc_run+0x328/0x620 __dev_queue_xmit+0x797/0x3100 tcf_mirred_to_dev+0x7b1/0xf70 tcf_mirred_act+0x68a/0x1060 [repeating ~30+ times until stack overflow] Kernel panic - not syncing: Fatal exception in interrupt Fix this by incrementing sched_mirred_nest before calling tcf_blockcast() and decrementing it on return, mirroring the non-blockcast path. This ensures subsequent recursive entries see the updated counter and are correctly limited by MIRRED_NEST_LIMIT.

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

Vendors

Linux

Products

Linux Kernel

CVE-2026-121369

Security Advisory 0225

On affected platforms running Arista EOS under specific link configurations an attacker with direct connectivity to the system may cause system CPU and memory utilization to increase considerably leading to slow responsiveness and eventually may cause the system to reboot.

CVSS 4.0 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Arista

Products

Eos

CVE-2026-120828

Memory exhaustion via abandoned far-future read-concern waiters in disaggregated storage

A replica-set database server node does not limit or reclaim internal wait records created while handling a client-supplied read option that names a point in time the node will never reach. A party with network access and no credentials can cause these records to accumulate without bound and persist after the requests end, which may make the server run out of memory and become unavailable.

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

Vendors

Mongodb

Products

Mongodb Server

CVE-2026-91150

Cockpit: cockpit: denial of service via unbounded fragmented websocket messages

A flaw was found in Cockpit. This vulnerability allows a remote attacker, without prior authentication, to send specially crafted fragmented WebSocket messages. These messages accumulate without a total-size limit, leading to unbounded memory exhaustion and a denial of service in the `cockpit-ws` service.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Openshift Devspaces and 2 more

CVE-2026-123770

Apache Axis2/Java: Unbounded multipart and form-encoded request bodies

Allocation of Resources Without Limits or Throttling vulnerability in Apache Axis2/Java. The multipart/form-data and application/x-www-form-urlencoded message builders read the request body directly from the transport stream with no size limit, so the servlet container's post-size limit did not apply, and multipart temporary files were not deleted. An unauthenticated caller could exhaust memory or disk. Version 2.0.2 bounds these bodies with configurable limits and deletes temporary files. This issue affects Apache Axis2/Java: through 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

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

Vendors

Apache

Products

Apache Axis2/java

CVE-2026-120810

Uncontrolled Resource Consumption in MongoDB Server Aggregation Framework via Internal Expression Leads to Denial of Service

An issue in MongoDB server’s aggregation framework allows an authenticated user with read privileges to cause a denial of service by sending specially crafted aggregate commands using an internal expression. Despite its internal naming, this expression is registered as accessible to any authenticated client. By supplying crafted input parameters across multiple concurrent connections, each evaluation triggers unbounded memory allocations with no per-expression memory limits enforced. This can exhaust available server memory and cause the mongod process to be terminated by the operating system’s out-of-memory killer.

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

Vendors

Mongodb

Products

Mongodb Server

CVE-2026-118036

Uncontrolled Resource Consumption in Telerik Document Processing Libraries RadPdfProcessing and AI Document Summarization and Question Answering

In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, uncontrolled recursion, infinite loop, inefficient algorithmic complexity and resource allocation vulnerabilities in RadPdfProcessing and AI document summarization and question answering allow an unauthenticated attacker to terminate or hang the host process via a crafted PDF document or document text submitted for summarization or question answering.

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

Vendors

Progress

Products

Telerik Document Processing Libraries