GHSA-4W3G-JFJ2-CW2Q

Vulnerability from github – Published: 2026-10-28 21:14 – Updated: 2026-10-28 21:14
VLAI
Summary
Go JOSE: Panic during CBC-HMAC processing
Details

Summary

Decrypting a ciphertext with "A128CBC-HS256", "A192CBC-HS384", or "A256CBC-HS512" can result in a panic on untrusted input.

Note this advisory is the same as https://github.com/go-jose/go-jose/security/advisories/GHSA-6mp9-8xrw-74r4.

Details

Insufficient validation of parameters can lead to attempting to index into an empty buffer. See https://github.com/go-jose/go-jose/pull/292.

Workarounds

If the application does not require the CBC-HMAC modes for content encryption, and is using github.com/go-jose/go-jose/v4, do not include them in the list of ContentEncryption algorithms passed to ParseEncrypted / ParseEncryptedJSON / ParseEncryptedCompact.

Impact

Denial of service vulnerability. Any application which decrypts untrusted ciphertexts with the indicated algorithms is affected.

Acknowledgements

Thanks to Joshua Rogers of AISLE Research for reporting this problem.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-jose/go-jose/v4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/go-jose/go-jose/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-116585"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-28T21:14:00Z",
    "nvd_published_at": "2026-10-26T22:16:54Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nDecrypting a ciphertext with \"A128CBC-HS256\", \"A192CBC-HS384\", or \"A256CBC-HS512\" can result in a panic on untrusted input.\n\nNote this advisory is the same as https://github.com/go-jose/go-jose/security/advisories/GHSA-6mp9-8xrw-74r4.\n\n### Details\n\nInsufficient validation of parameters can lead to attempting to index into an empty buffer. See https://github.com/go-jose/go-jose/pull/292.\n\n### Workarounds\n\nIf the application does not require the CBC-HMAC modes for content encryption, and is using github.com/go-jose/go-jose/v4, do not include them in the list of ContentEncryption algorithms passed to ParseEncrypted / ParseEncryptedJSON / ParseEncryptedCompact.\n\n### Impact\n\nDenial of service vulnerability. Any application which decrypts untrusted ciphertexts with the indicated algorithms is affected.\n\n### Acknowledgements\n\nThanks to Joshua Rogers of AISLE Research for reporting this problem.",
  "id": "GHSA-4w3g-jfj2-cw2q",
  "modified": "2026-10-28T21:14:00Z",
  "published": "2026-10-28T21:14:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116585"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-jose/go-jose/pull/292"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/go-jose/go-jose"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-jose/go-jose/releases/tag/v4.1.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Go JOSE: Panic during CBC-HMAC processing"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.