synced 2 MIN AGO
01 Record

CVE-2025-64484

OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation

HighPUBLISHEDCNA: GitHub_M
CNA base score8.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
View raw JSON

02 Description

OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.65% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 51.1% of scored records. A rank, not a probability.
NVD base score
8.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-11-10 21:33Z11 MO AGO
Last updated
2025-11-14 19:24Z11 MO AGO
Reserved
2025-11-05
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weaknesses
  • CWE-644Improper Neutralization of HTTP Headers for Scripting SyntaxVariant
Data version
5.2
Document digest
1c90ca7834f1f0c3289a9f3d70a2c5a619cde7d7ff1c958fd1be5a9fe5e62f1f

05 Affected products

VendorProductVersionsPlatforms
oauth2-proxyoauth2-proxy< 7.13.0—

06 References