CVE-2026-49264

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Source
https://cve.org/CVERecord?id=CVE-2026-49264
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49264.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49264
Aliases
Downstream
AZL (1)
CGA (161)
CLEANSTART (2)
DEBIAN (1)
ECHO (1)
MINI (24)
OESA (4)
openSUSE (2)
SUSE (5)
UBUNTU (1)
Related
openSUSE (2)
SUSE (5)
Published
2026-10-13T15:48:40Z
Modified
2026-10-24T02:30:44Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
OAuthLib: Unsafe JSONP callback injection in RevocationEndpoint allows arbitrary JavaScript response generation
Details

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 0.6.1 until 4.0.0, OAuthLib's RevocationEndpoint in oauthlib/oauth2/rfc6749/endpoints/revocation.py reflects an unvalidated callback request parameter into success and error response bodies when enable_jsonp=True. The callback can come from the query string or request body and is used without restricting it to a legal JavaScript function name. A browser application that loads the revocation response as trusted JSONP and permits attacker influence over callback can therefore execute attacker-controlled JavaScript in the including application's origin, with access to its DOM and script-accessible data. The feature is disabled by default, so only deployments that explicitly enable JSONP are affected. This issue is fixed in version 4.0.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49264.json"
}
References

Affected packages

Git / github.com/oauthlib/oauthlib

Affected ranges

Type
GIT
Repo
https://github.com/oauthlib/oauthlib
Events
Introduced
056e7ce13de4de913af8617891dc92e0ea43c669
Fixed
145a9a4690cb4d9de30d15fcc2984e34c49df741
Fixed
c888359f3c42bec235b2c5caab2069c9ed62457c
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0.6.1"
                },
                {
                    "fixed":  "4.0.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "c888359f3c42bec235b2c5caab2069c9ed62457c"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.0.0",
            "range":  [
                {
                    "fixed":  "145a9a4690cb4d9de30d15fcc2984e34c49df741"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.6.1
0.6.2
0.6.3
0.7.0
0.7.1
0.7.2
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.1.0
1.1.1
v1.*
v1.1.2
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v3.*
v3.0.0
v3.0.1
v3.1.0
v3.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49264.json"