CVE-2023-22490 (GCVE-0-2023-22490)

Vulnerability from cvelistv5 – Published: 2023-02-14 19:47 – Updated: 2026-10-08 21:14
VLAI
Title
Git vulnerable to local clone-based data exfiltration with non-local transports
Summary
Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:12 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7763 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
git git Affected: >= 2.39.0, < 2.39.2
Affected: >= 2.38.0, < 2.38.4
Affected: >= 2.37.0, < 2.37.6
Affected: >= 2.36.0, < 2.36.5
Affected: >= 2.35.0, < 2.35.7
Affected: >= 2.34.0, < 2.34.7
Affected: >= 2.33.0, < 2.33.7
Affected: >= 2.32.0, < 2.32.6
Affected: >= 2.31.0, < 2.31.7
Affected: < 2.30.8
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                "url": "https://security.gentoo.org/glsa/202312-15"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-22490",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-08T21:12:31.095732Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-08T21:12:31.549Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "git",
              "vendor": "git",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 2.39.0, \u003c 2.39.2"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.38.0, \u003c 2.38.4"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.37.0, \u003c 2.37.6"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.36.0, \u003c 2.36.5"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.35.0, \u003c 2.35.7"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.34.0, \u003c 2.34.7"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.33.0, \u003c 2.33.7"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.32.0, \u003c 2.32.6"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 2.31.0, \u003c 2.31.7"
                },
                {
                  "status": "affected",
                  "version": "\u003c 2.30.8"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim\u0027s filesystem within the malicious repository\u0027s working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253.\n\nA fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-59",
                  "description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-12-27T10:06:20.603Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q"
            },
            {
              "name": "https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85"
            },
            {
              "name": "https://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd"
            },
            {
              "url": "https://security.gentoo.org/glsa/202312-15"
            }
          ],
          "source": {
            "advisory": "GHSA-gw92-x3fm-3g3q",
            "discovery": "UNKNOWN"
          },
          "title": "Git vulnerable to local clone-based data exfiltration with non-local transports"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2023-22490",
        "datePublished": "2023-02-14T19:47:56.863Z",
        "dateReserved": "2022-12-29T17:41:28.089Z",
        "dateUpdated": "2026-10-08T21:14:06.502Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    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.