FKIE_CVE-2026-44742

Vulnerability from fkie_nvd - Published: 2026-05-07 19:16 - Updated: 2026-05-14 17:42
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.
References
cve@mitre.orghttps://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868bPatch
cve@mitre.orghttps://gitlab.com/mailman/postorius/-/issues/620Vendor Advisory, Issue Tracking
cve@mitre.orghttps://gitlab.com/mailman/postorius/-/merge_requests/972Issue Tracking, Patch
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2026/05/07/3Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
postorius_project postorius *
To clipboard 

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    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:postorius_project:postorius:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F1BD7B5C-E82D-43DF-93F5-6201BBA16AFE",
              "versionEndIncluding": "1.3.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026."
    }
  ],
  "id": "CVE-2026-44742",
  "lastModified": "2026-05-14T17:42:47.040",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "references": [
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      "tags": [
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      "url": "https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b"
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      "tags": [
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    },
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      "tags": [
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      "url": "https://gitlab.com/mailman/postorius/-/merge_requests/972"
    },
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      "source": "cve@mitre.org",
      "tags": [
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        "Patch",
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      "url": "https://www.openwall.com/lists/oss-security/2026/05/07/3"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}


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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

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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.