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2025-12-27 22:52CVE-2025-68972mitre
PUBLISHED5.2CWE-347

In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.

Problem type

Affected products

GnuPG

GnuPG

<= 2.4.8 - AFFECTED

References

gpg.fail

https://gpg.fail/formfeed

news.ycombinator.com

https://news.ycombinator.com/item?id=46404339

JSON source

https://cveawg.mitre.org/api/cve/CVE-2025-68972
Click to expand
{
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  "dataVersion": "5.2",
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    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "dateUpdated": "2025-12-27T23:13:16.695Z",
    "dateReserved": "2025-12-27T22:52:30.688Z",
    "datePublished": "2025-12-27T22:52:30.957Z",
    "state": "PUBLISHED"
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  "containers": {
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      "providerMetadata": {
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        "dateUpdated": "2025-12-27T23:13:16.695Z"
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      "descriptions": [
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          "value": "In GnuPG through 2.4.8, if a signed message has \\f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an \"invalid armor\" message is printed during verification). This is related to use of \\f as a marker to denote truncation of a long plaintext line."
        }
      ],
      "affected": [
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          "product": "GnuPG",
          "defaultStatus": "unknown",
          "versions": [
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              "status": "affected",
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            }
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      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-347 Improper Verification of Cryptographic Signature",
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              "type": "CWE"
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      "references": [
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          "url": "https://gpg.fail/formfeed"
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            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "CHANGED",
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            "integrityImpact": "HIGH",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM"
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