GHSA-2F25-PFQ3-C7H8

Vulnerability from github – Published: 2026-05-08 23:06 – Updated: 2026-05-08 23:06
VLAI?
Summary
Phpseclib needs guardrails on large binaryfield integers
Details

Impact

Anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)

Patches

https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f

Workarounds

No.

References

https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f https://www.usenix.org/system/files/usenixsecurity25-shi-bing.pdf

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpseclib/phpseclib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.34"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-49316"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-834"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-08T23:06:50Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nAnyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f\n\n### Workarounds\nNo.\n\n### References\nhttps://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f\nhttps://www.usenix.org/system/files/usenixsecurity25-shi-bing.pdf",
  "id": "GHSA-2f25-pfq3-c7h8",
  "modified": "2026-05-08T23:06:50Z",
  "published": "2026-05-08T23:06:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/security/advisories/GHSA-2f25-pfq3-c7h8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49316"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2023-49316.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/phpseclib/phpseclib"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.34"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Phpseclib needs guardrails on large binaryfield integers"
}


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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.



Detection rules are retrieved from Rulezet.