CVE-2026-53508

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Source
https://cve.org/CVERecord?id=CVE-2026-53508
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53508.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53508
Aliases
Downstream
Related
Published
2026-08-31T18:52:12.213Z
Modified
2026-09-02T03:47:19.399837651Z
Severity
  • 6.0 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
oasdiff does not enforce --allow-external-refs=false on the git-revision load path (SSRF / local file read)
Details

oasdiff is a command-line and Go package that compares and detects breaking changes in OpenAPI specs. From version 1.13.2 through version 1.18.0, oasdiff did not enforce --allow-external-refs=false (library: openapi3.Loader.IsExternalRefsAllowed = false) when loading a spec from a git revision (the rev:path form, e.g. main:openapi.yaml). External $refs were resolved on that load path even when external refs were explicitly disabled, so the mitigation silently did not apply there. This issue has been patched in version 1.18.1.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53508.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-693",
        "CWE-73",
        "CWE-918"
    ]
}
References

Affected packages

Git / github.com/oasdiff/oasdiff

Affected ranges

Type
GIT
Repo
https://github.com/oasdiff/oasdiff
Events
Introduced
d886cb40c4fe95fa69ca7029a88ac7fcf7690a6e
Fixed
e84c5ad34934e3008efca2fc0f3aaed94855b66a
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ],
    "extracted_events": [
        {
            "introduced": "1.13.2"
        },
        {
            "fixed": "1.18.1"
        },
        {
            "fixed": "1.18.0"
        }
    ]
}

Affected versions

v1.*
v1.13.2
v1.13.3
v1.13.4
v1.13.5
v1.14.0
v1.15.0
v1.15.1
v1.15.2
v1.15.3
v1.16.0
v1.17.0
v1.18.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53508.json"