Vulnerability-Lookup

GHSA-3P38-Q93V-93W8

Vulnerability from github – Published: 2026-10-22 03:33 – Updated: 2026-10-22 03:33

Details

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in _flag parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-114720"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-93"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-22T02:16:59Z",
    "severity": "HIGH"
  },
  "details": "Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit \u201cFix IMAP command injection via CRLF in `_flag` parameter of mail/mark action\u201d, which rejects flags containing control, whitespace and IMAP-special characters.",
  "id": "GHSA-3p38-q93v-93w8",
  "modified": "2026-10-22T03:33:37Z",
  "published": "2026-10-22T03:33:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114720"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/commit/242c6d6a150c850bd96d20d400261e71f8d11f9b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/commit/6c3c1897c11e193e47fccaabc87e9ca2a0a73e51"
    },
    {
      "type": "WEB",
      "url": "https://bugs.debian.org/1151279"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"
    },
    {
      "type": "WEB",
      "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"
    },
    {
      "type": "WEB",
      "url": "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-114720 (GCVE-0-2026-114720)

Vulnerability from cvelistv5 – Published: 2026-10-22 01:32 – Updated: 2026-10-22 01:32

Summary

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in `_flag` parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2351 records in the last 180 days details

References

6 references

URL	Tags
https://bugs.debian.org/1151279	issue-trackingthird-party-advisory
https://github.com/roundcube/roundcubemail/commit…	patch
https://roundcube.net/news/2026/10/19/security-up…	vendor-advisoryrelease-notes
https://github.com/roundcube/roundcubemail/releas…	release-notespatch
https://github.com/roundcube/roundcubemail/releas…	release-notespatch
https://github.com/roundcube/roundcubemail/commit…	patch

Impacted products

1 product

Vendor	Product	Version
Roundcube	Webmail	Affected: 1.6.0 , < 1.6.20 (semver) Affected: 1.7.0 , < 1.7.5 (semver) cpe:2.3:a:roundcube:webmail:::::::: cpe:2.3:a:roundcube:webmail::::::::

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Webmail",
          "repo": "https://github.com/roundcube/roundcubemail/",
          "vendor": "Roundcube",
          "versions": [
            {
              "lessThan": "1.6.20",
              "status": "affected",
              "version": "1.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.7.5",
              "status": "affected",
              "version": "1.7.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.6.20",
                  "versionStartIncluding": "1.6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.7.5",
                  "versionStartIncluding": "1.7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit \u201cFix IMAP command injection via CRLF in `_flag` parameter of mail/mark action\u201d, which rejects flags containing control, whitespace and IMAP-special characters."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-93",
              "description": "CWE-93 Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-22T01:32:44.426Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "issue-tracking",
            "third-party-advisory"
          ],
          "url": "https://bugs.debian.org/1151279"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/roundcube/roundcubemail/commit/6c3c1897c11e193e47fccaabc87e9ca2a0a73e51"
        },
        {
          "tags": [
            "vendor-advisory",
            "release-notes"
          ],
          "url": "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"
        },
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"
        },
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/roundcube/roundcubemail/commit/242c6d6a150c850bd96d20d400261e71f8d11f9b"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-114720",
    "datePublished": "2026-10-22T01:32:44.426Z",
    "dateReserved": "2026-10-22T01:32:44.065Z",
    "dateUpdated": "2026-10-22T01:32:44.426Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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