PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard

Prerequisites both conditions must hold; both are deployment properties, not attacker-controlled at request time:- The jwt.decode allow-list mixes an HMAC algorithm with an asymmetric one, e.g. algorithms="ES256", "HS256" the RFC 8725 footgun the guard exists to backstop.- The verification key is...

PYSEC-2026-4145 PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard

Prerequisites both conditions must hold; both are deployment properties, not attacker-controlled at request time: - The jwt.decode allow-list mixes an HMAC algorithm with an asymmetric one, e.g. algorithms="ES256", "HS256" the RFC 8725 footgun the guard exists to backstop. - The verification key ...

PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard

Prerequisites both conditions must hold; both are deployment properties, not attacker-controlled at request time: - The jwt.decode allow-list mixes an HMAC algorithm with an asymmetric one, e.g. algorithms="ES256", "HS256" the RFC 8725 footgun the guard exists to backstop. - The verification key ...

GHSA-FFC3-869F-JXW9 PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard

Prerequisites both conditions must hold; both are deployment properties, not attacker-controlled at request time: - The jwt.decode allow-list mixes an HMAC algorithm with an asymmetric one, e.g. algorithms="ES256", "HS256" the RFC 8725 footgun the guard exists to backstop. - The verification key ...

ANT-2026-7R9KHDAS · cloudflare/circl · Signature Verification Bypass / Universal Forgery

authenticity-not-verified critical Severity Claude critical · Security research firm - · Maintainer - REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-7R9KHDAS: CIRCL sign/bls: universal signature forgery in KeyG2SigG1 via G1-infinity point In the KeyG2SigG1 configuration...

ANT-2026-BT210RQ0 · libtom/libtomcrypt · Cryptographic Logic Flaw

weak-crypto critical Severity Claude critical · Security research firm - · Maintainer - REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-BT210RQ0: libtomcrypt AES-SIV: universal forgery and plaintext recovery when called without AD In src/encauth/siv/siv.c, ssivS2V and th...

PT-2026-76180

Issue summary: When an application drives an AES-OCB context through the public EVP Cipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

Missing Cryptographic Step

Overview Affected versions of this package are vulnerable to Missing Cryptographic Step in the AES-OCB provider when an application uses the EVPCipher interface. The handler silently discards the IV, so every message under a given key runs with the all-zero offset state, causing nonce reuse. If...

AZL-89876 CVE-2026-45445 affecting package edk2 for versions less than 20240524git3e722403cd16-18

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

AZL-89793 CVE-2026-45445 affecting package openssl-fips-provider 3.1.2-2

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

CVE-2026-45445

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

CVE-2026-45445: Missing Cryptographic Step

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

AES-OCB IV Ignored on EVP_Cipher() Path

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

ANT-2026-KNXJMVYC · wolfSSL · signature-bypass

authenticity-not-verified high CVE-2026-5466 GHSA-47qf-hp3h-rwmm Severity Claude high · Security research firm high · Maintainer high Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Calif. ANT-2026-KNXJMVYC:...

SLasH-DSA: Breaking SLH-DSA Using an Extensible End-To-End Rowhammer Framework

As quantum computing advances, PQC schemes are adopted to replace classical algorithms. Among them is the SLH-DSA that was recently standardized by NIST and is favored for its conservative security foundations. In this work, we present the first software-only universal forgery attack on SLH-DSA,...

PT-2023-19366 · Pqclean · Pqclean

Name of the Vulnerable Software and Affected Versions: PQClean version d03da30 Description: The issue allows universal forgeries of digital signatures via a template side-channel attack because of intermediate data leakage of one vector. This is related to CRYSTALS-DILITHIUM in Post-Quantum...