Vulnerability-Lookup

CVE-2026-91773 (GCVE-0-2026-91773)

Vulnerability from cvelistv5 – Published: 2026-09-15 01:20 – Updated: 2026-09-15 19:05

Title

Soft Serve 0.7.1 through 0.11.6 Information Disclosure via LFS Locks

Summary

Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally to recover locked file paths, usernames, and lock timestamps from private repositories.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 19:05 UTC

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/charmbracelet/soft-serve/secur…	vendor-advisory
https://github.com/charmbracelet/soft-serve/commi…	patch
https://github.com/charmbracelet/soft-serve/blob/…	technical-description
https://github.com/charmbracelet/soft-serve	product
https://www.vulncheck.com/advisories/soft-serve-0…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
charmbracelet	soft-serve	Affected: 0.7.1 , < 0.12.0 (semver) cpe:2.3:a:charm:soft_serve::::::::

Date Public

2026-07-31 00:00

Credits

sondt99 George Chen

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-91773",
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          "url": "https://github.com/charmbracelet/soft-serve"
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    "dateReserved": "2026-09-15T00:45:13.102Z",
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    "state": "PUBLISHED"
  },
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    "vulnrichment": {
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}

FKIE_CVE-2026-91773

Vulnerability from fkie_nvd - Published: 2026-09-15 02:16 - Updated: 2026-09-15 19:17

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/charmbracelet/soft-serve
	disclosure@vulncheck.com	https://github.com/charmbracelet/soft-serve/blob/v0.11.6/pkg/store/database/lfs.go#L115-L124
	disclosure@vulncheck.com	https://github.com/charmbracelet/soft-serve/commit/e34914699128c937afad167d43ccb5310e48b319
	disclosure@vulncheck.com	https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-xqg9-4q65-m2wf
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/soft-serve-0.7.1-through-0.11.6-information-disclosure-via-lfs-locks

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:golang/github.com/charmbracelet/soft-serve",
          "product": "soft-serve",
          "vendor": "charmbracelet",
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              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
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  ],
  "cveTags": [],
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      "lang": "en",
      "value": "Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally to recover locked file paths, usernames, and lock timestamps from private repositories."
    }
  ],
  "id": "CVE-2026-91773",
  "lastModified": "2026-09-15T19:17:47.540",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 4.3,
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        "impactScore": 1.4,
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        "type": "Secondary"
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    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "attackComplexity": "LOW",
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          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
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          "version": "4.0",
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          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "type": "Secondary"
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/charmbracelet/soft-serve/commit/e34914699128c937afad167d43ccb5310e48b319"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-xqg9-4q65-m2wf"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/soft-serve-0.7.1-through-0.11.6-information-disclosure-via-lfs-locks"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-C9M9-282W-83CP

Vulnerability from github – Published: 2026-09-15 03:30 – Updated: 2026-09-15 03:30

Details

Severity

4.3 (Medium)


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

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-91773"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T02:16:50Z",
    "severity": "MODERATE"
  },
  "details": "Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally to recover locked file paths, usernames, and lock timestamps from private repositories.",
  "id": "GHSA-c9m9-282w-83cp",
  "modified": "2026-09-15T03:30:30Z",
  "published": "2026-09-15T03:30:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-xqg9-4q65-m2wf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91773"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/commit/e34914699128c937afad167d43ccb5310e48b319"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve"
    },
    {
      "type": "WEB",
      "url": "https://github.com/charmbracelet/soft-serve/blob/v0.11.6/pkg/store/database/lfs.go#L115-L124"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/soft-serve-0.7.1-through-0.11.6-information-disclosure-via-lfs-locks"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-91773 (GCVE-0-2026-91773)

FKIE_CVE-2026-91773

GHSA-C9M9-282W-83CP

Tags

Sightings

Nomenclature