November 13, 2026 Follow Egret
CVE-2021-39935 · CVE record: PUBLISHED

GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability

GitLab GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.5 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. Unauthorized external users could perform Server Side Requests via the CI Lint API

Exploitation evidence

Known exploited · CISA KEV listed

Added 2026-02-03. Ransomware campaign use: Unknown.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date: 2026-02-24. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

GitLab / GitLab

Default status: Not specified

  • affected: >=10.5, <14.3.6
  • affected: >=14.4, <14.4.4
  • affected: >=14.5, <14.5.2

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.3614,
  "percentile": 0.98499
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.3614,
  "percentile": 0.98489
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.3614,
  "percentile": 0.98487
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.3614,
  "percentile": 0.98486
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.3614,
  "percentile": 0.98485
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.3614,
  "percentile": 0.98483
}
06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.3614,
  "percentile": 0.98482
}
05 Nov 2026, 06:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

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              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39935.json"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-39935",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-03T15:23:46.312568Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-02-03",
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              },
              "type": "kev"
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          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-918",
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        "providerMetadata": {
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      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
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            "baseScore": 6.8,
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
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      ],
      "problemTypes": [
        {
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            {
              "description": "Server-side request forgery (ssrf) in GitLab",
              "lang": "en",
              "type": "text"
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-13T15:47:59.000Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
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      "references": [
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            "vendor_data": [
              {
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                    {
                      "product_name": "GitLab",
                      "version": {
                        "version_data": [
                          {
                            "version_value": ">=10.5, <14.3.6"
                          },
                          {
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04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.3614,
  "percentile": 0.98481
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.3614,
  "percentile": 0.98478
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.3614,
  "percentile": 0.98476
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2021-39935",
  "cwes": [
    "CWE-918"
  ],
  "dateAdded": "2026-02-03",
  "dueDate": "2026-02-24",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-released/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-39935",
  "product": "Community and Enterprise Editions",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "shortDescription": "GitLab Community and Enterprise Editions contain a server-side request forgery vulnerability which could allow unauthorized external users to perform Server Side Requests via the CI Lint API. ",
  "vendorProject": "GitLab",
  "vulnerabilityName": "GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability"
}
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