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CVE-2026-84306

Filament: Multi-factor authentication (app) codes can still be used after a newer code has been used

Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.12.6 and 5.7.6, packages/panels/src/Auth/MultiFactor/App/AppAuthentication.php uses AppAuthentication::verifyCode() with a used-code cache key derived from both the app authentication secret and the submitted TOTP code. This isolates the newest accepted timestep by code instead of by secret, allowing a previously issued app-based MFA code to be accepted after a newer code has already been used. Reuse of the exact same code was already prevented, but another code inside the accepted time window remained usable. An attacker who obtains the target account's password and one app-based MFA code can use that code for the remainder of the configured window, which is approximately four minutes with the default settings, even after the legitimate account holder logs in with a newer code. Email-based MFA is not affected. This issue is fixed in versions 4.12.6 and 5.7.6.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Filamentphp
Products
Filament
CVE-2026-12704

SAML assertion replay via skipped InResponseTo validation

When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and gain a session as the victim user. Only instances with the allow_idp_initiated SAML setting enabled are affected; this setting is off by default and Grafana OSS is not affected.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Grafana
Products
Grafana Enterprise
CVE-2026-13734

Zephyr WireGuard mutates peer state before anti-replay check, enabling capture-replay endpoint hijack

Zephyr's WireGuard VPN data-plane receive handler wg_process_data_message() in subsys/net/lib/wireguard/wg_crypto.c validated the anti-replay counter too late. After AEAD decryption of a MESSAGE_TRANSPORT_DATA packet succeeded, the code committed several peer-state changes — update_peer_addr() (endpoint roaming update), the keypair->last_rx/peer->last_rx liveness timers, and keypair_update() (promote next→current and destroy the previous keypair) — and only afterward called wg_check_replay(). On a replayed packet the replay check returned -EINVAL, but none of the preceding mutations were rolled back. The AEAD tag authenticates content but not freshness, so a replayed-but-authentic transport packet decrypts correctly. An attacker who captures one valid ciphertext off the wire (an on-path or shared-medium observer) can re-inject it from an arbitrary spoofed source address. Reaching the handler requires no credentials: it is driven directly from inbound UDP datagrams via the dispatch in subsys/net/lib/wireguard/wg.c. Because the state mutations committed before the replay check, the replay repoints the peer endpoint to the attacker-chosen source address (roaming hijack), redirecting the victim's subsequent outbound tunnel traffic until the legitimate peer's next packet re-corrects it; it also prematurely destroys the previous keypair and refreshes the RX liveness timer. The tunnel payload stays encrypted under the session keypair, so this is an integrity/availability impact (traffic redirection and session disruption), not payload disclosure. The fix moves wg_check_replay() to immediately after a successful decrypt, before any peer-state mutation, matching the WireGuard specification and the Linux reference implementation.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Zephyrproject
Products
Zephyr
CVE-2026-82470

Rodauth before 2.47.0 TOTP Code Reuse via Drift Window

Rodauth before 2.47.0 contains a time-based one-time password reuse vulnerability in the otp feature that fails to track the last accepted code timestamp. Attackers who observe a valid TOTP code can replay it during the drift window to bypass the second authentication factor.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Jeremyevans
Products
Rodauth
CVE-2025-61479

Denial of Service via Replayed Payloads on Acre Security Main Board

An issue in Vanderbilt Industries, Acre Security SPC5300.000 Main Board v.3.14.1 allows a physically proximate attacker to cause a denial of service via the SPC Connect Pro software accepts replayed application-layer payloads injected into an active TCP session.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
—
Products
—
CVE-2025-61480

Denial of Service via Spoofed TCP FIN Packets on Acre Security SPC5300 Main Board

An issue in Vanderbilt Industries, Acre Security SPC5300.000 Main Board v.3.14.1 allows a physically proximate attacker to cause a denial of service via spoofed TCP FIN packets without validating the sequence or acknowledgment numbers.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
—
Products
—
CVE-2026-46369

Nimiq: Validity store off by one error

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Through 1.5.0, the validity store uses a strict lower-bound comparison that expires a stored transaction too early relative to Transaction::is_valid_at, allowing a remote attacker to replay the same signed transaction during a blocks_per_batch minus one block window and cause the sender and recipient balances to be updated twice. This issue is fixed in version 1.5.1.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Nimiq
Products
Core-rs-albatross
CVE-2026-65905

Apache Tomcat: Limited replay attack possible with DIGEST authentication

Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that request is replayable once only while the associated nonceCount remains within the replay window.   This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.30 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Apache
Products
Tomcat
CVE-2026-55088

Etherpad: Device-to-device author-token transfer endpoint is replayable, never expires, and exposes the cleartext author token

Etherpad is a real-time collaborative editor. From 2.6.0 until 3.1.0, Etherpad's src/node/hooks/express/tokenTransfer.ts uses POST /tokenTransfer to store an author token for transfer between browsers and exposes it through GET /tokenTransfer/{uuid}. Although the record includes createdAt, the transfer has no expiration check, is not removed after successful redemption, and is returned by res.send(tokenData), including the raw author token. An unauthenticated attacker who obtains a transfer UUID can repeatedly redeem it, receive fresh author cookies, read the cleartext token, and impersonate the originating author for pad read and write operations. This issue is fixed in version 3.1.0.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Etherpad
Products
Etherpad
CVE-2026-53424

Missing one-time-use enforcement in Samly allows replay of SAML bearer assertions

Authentication Bypass by Capture-replay vulnerability in dropbox samly allows an attacker to authenticate as the subject of a captured SAML assertion by resubmitting it. Samly.Helper.decode_idp_auth_resp/3 in lib/samly/helper.ex calls esaml_sp:validate_assertion/2, whose default duplicate detector is a no-op. The /3 arity accepting a DuplicateFun exists in esaml and implements the check, but Samly never calls it and offers no configuration to supply one, so the SAML 2.0 Web Browser SSO Profile requirement that a bearer assertion be used once is unenforced. An attacker holding a valid SAMLResponse obtained from the network, from browser history, or from logs can submit the identical bytes repeatedly until the assertion's NotOnOrAfter passes, each time establishing a session as the assertion's subject. This issue affects samly: from 0.3.0 onward.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Dropbox Handnot2
Products
Samly Samly
CVE-2026-50575

BetterDesk has a replay behavior vulnerability when devices are deleted

BetterDesk is a remote desktop management solution. BetterDesk versions through 2.3.0 improperly invalidate deleted device identities, allowing an unauthenticated client to replay or spoof a device ID and bypass registration controls. Version 3.0.0-alpha contains a patch. No known workarounds are available.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Unitronix
Products
Betterdesk
CVE-2026-76214

phpMyFAQ before 4.1.7 WebAuthn Replay Attack via Challenge

phpMyFAQ before 4.1.7 fails to persist the WebAuthn login challenge generated by prepareForLogin, because neither WebAuthn controller saves the mutated key objects back to the database. At login the anti-replay comparison is skipped by its own null guard, allowing an attacker who captures a successful WebAuthn assertion to replay it indefinitely and authenticate as the user without any interaction or hardware key.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Phpmyfaq
Products
Phpmyfaq
CVE-2026-73683

Laravel Socialite Facebook Provider Authentication Bypass via Nonce Replay

Laravel Socialite's Facebook provider contains an authentication bypass vulnerability that allows unauthenticated attackers to replay captured OIDC id_tokens by exploiting the missing nonce claim validation in the getUserByOIDCToken() function within FacebookProvider.php. Attackers who obtain a valid, unexpired id_token issued for the same Facebook App ID can submit the captured token to the backend userFromToken() endpoint, bypassing authentication controls because signature, aud, and iss checks pass while no session-bound nonce comparison is performed, resulting in unauthorized access to victim accounts.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Laravel
Products
Socialite
CVE-2026-17045

IBM i is Affected By Multiple Vulnerabilities in Digital Certificate Manager

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to perform unauthorized operations and access sensitive information due to improper session management.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Ibm
Products
I
CVE-2026-17268

IBM i is Affected By Multiple Vulnerabilities in Navigator for i

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to improper validation of a session token.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Ibm
Products
I
CVE-2026-73431

Reusable Account Activation and Recovery Tokens Allow Repeated Account Takeover in vulnerability-lookup

Vulnerability-Lookup contains an authentication weakness in its account activation and password-recovery mechanism. Activation and recovery links were generated using stateless signed tokens containing only the user's login. Although the token signature and age were validated, the application did not track whether a token had already been successfully used. As a result, a captured activation or password-recovery link remained valid for the entire configured TOKEN_VALIDITY_PERIOD, even after the associated password had been changed. An attacker who obtains a valid activation or recovery token could therefore replay it multiple times during its validity period to set a new password and repeatedly take control of the affected account. In addition, tokens were not bound to a specific purpose, allowing the same token mechanism to be used across activation and recovery workflows. The patch introduces purpose-bound tokens and a random nonce whose SHA-256 digest is stored with the user account. The nonce is invalidated after a successful password change, making tokens single-use, while issuing a new token invalidates any previously issued token. The password-setting operation now explicitly consumes the token before committing the account change. Successful exploitation requires the attacker to obtain a currently valid activation or recovery link, but does not require knowledge of the victim's existing password or an authenticated session.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Circl
Products
Vulnerability-lookup
CVE-2026-72780

Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey

Craft CMS before 5.10.5 fails to persist updated credential counters after WebAuthn assertion validation in the passkey login endpoint. Attackers can replay captured login request bodies containing requestOptions and response to create additional authenticated sessions for victim accounts.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Craftcms
Products
Craft Cms
CVE-2026-18967

Keycloak-services: keycloak-services: saml onetimeuse assertion replay in idp-initiated broker flow

A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured as a SAML broker using the IdP-Initiated flow, Keycloak fails to enforce the OneTimeUse condition in SAML assertions. This allows an attacker who captures a valid, unused assertion to replay it multiple times. Successful exploitation could allow an attacker to hijack a user's session and gain unauthorized access to the system as that user.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Build Keycloak Build Of Keycloak Jboss Enterprise Application Platform Expansion Pack and 3 more