29 matches found
poc-cve-2016-10555
Change the algorithm RS256asymmetric to HS256symmetric - POC CVE-2016-10555 The algorithm HS256 uses the secret key to sign and verify each message. The algorithm RS256 uses the private key to sign the message and uses the public key for authentication. If you change the algorithm from RS256 to...
RS256-2-HS256
RS256-2-HS256 JWT Attack to change the algorithm RS256 to HS256 Usage usage: RS2562HS256JWT.py -h payload pubkey positional arguments: payload JSON payload from JWT to attack pubkey Public key file to use for signing optional arguments: -h, --help show this help message and exit Example...
CVE-2018-0114-Go
CVE-2018-0114 Proof of Concept Reference: CVE-2018-0114 Note: For educational purposes only. To generate a JWT with the claim "admin", run the following command in the project directory: go run . --claim=admin /\ \ /\ /\ \ /\ \ /'\ /'\ /' \ /' \ /'\ /' \ /' \ /\ \ \ \ \ /\ \ \ \ \ \ \ \ \L\...
Exploit for CVE-2026-102268
CVE-2026-102268 — PyJWT Asymmetric-PEM Detection Bypass E...
8x8: connect.8x8.com/api/v1: JWT Algorithm Confusion Vulnerability
A JWT algorithm confusion vulnerability was reported in the v1 API of connect.8x8.com. The JWT verifier did not enforce algorithm pinning and would accept HS256 tokens signed with the RSA public key used as an HMAC secret. The issue was remediated by enforcing RS256 algorithm pinning in the v1 AP...
BIT-PARSE-2026-27804 Parse Server: Account takeover via JWT algorithm confusion in Google auth adapter
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.3 and 9.3.1, an unauthenticated attacker can forge a Google authentication token with alg: "none" to log in as any user linked to a Google account, without knowing their...
CVE-2025-68925
Summary (CVE-2025-68925): Jervis (net.gleske:jervis) is vulnerable prior to version 2.2 due to a JWT header check omission that fails to enforce the algorithm field (alg) to RS256. The issue allows potential JWT forgery or signature bypass depending on context, as described in multiple sources (e...
CVE-2025-68925: Improper Verification of Cryptographic Signature
Jervis is a library for Job DSL plugin scripts and shared Jenkins pipeline libraries. Prior to 2.2, the code doesn't validate that the JWT header specifies "alg":"RS256". This vulnerability is fixed in 2.2...
EUVD-2023-2883
Malicious code in bioql PyPI...
CVE-2023-48238
joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...
CVE-2024-54150
cjwt is a C JSON Web Token JWT Implementation. Algorithm confusion occurs when a system improperly verifies the type of signature used, allowing attackers to exploit the lack of distinction between signing methods. If the system doesn't differentiate between an HMAC signed token and an RS/EC/PS...
CVE-2024-54150: Improper Verification of Cryptographic Signature
cjwt is a C JSON Web Token JWT Implementation. Algorithm confusion occurs when a system improperly verifies the type of signature used, allowing attackers to exploit the lack of distinction between signing methods. If the system doesn't differentiate between an HMAC signed token and an RS/EC/PS...
Authentication Bypass
firebase/php-jwt is vulnerable to Authentication Bypass. The vulnerability is due to missing algorithm checks when calling the decode method allowing attackers bypass verification when using asymmetric keys RS256, RS384, RS512, ES256, ES384, ES512 when there is no algorithm specified within the...
JSON Web Token (JWT) Algorithm Confusion
fast-jwt is vulnerable to JWT Algorithm Confusion. The vulnerability is caused by a missing validation on publicKeyPemMatcher constant defined in fast-jwt/src/crypto.js which is used to match all common PEM formats for public keys. An attacker can craft a malicious JWT token utilizing the HS256...
CVE-2023-48223
fast-jwt provides fast JSON Web Token JWT implementation. Prior to version 3.3.2, the fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. ...
CVE-2023-48223 fast-jwt JWT Algorithm Confusion
fast-jwt provides fast JSON Web Token JWT implementation. Prior to version 3.3.2, the fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. ...
CVE-2023-48223
fast-jwt prior to v3.3.2 contains a publicKeyPemMatcher bug that fails to cover all PEM formats for public keys, enabling an algorithm-confusion attack (HS256 signed with an RSA public key) when RS256 is used and the verifier does not explicitly specify an algorithm. A patch in v3.3.2 fixes this ...
GHSA-4XW9-CX39-R355 json-web-token library is vulnerable to a JWT algorithm confusion attack
Summary The json-web-token library is vulnerable to a JWT algorithm confusion attack. Details On line 86 of the 'index.js' file, the algorithm to use for verifying the signature of the JWT token is taken from the JWT token, which at that point is still unverified and thus shouldn't be trusted. To...
CVE-2023-48238
joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...
CVE-2023-48238 JWT Algorithm Confusion in json-web-token library
joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...