CVE-2026-54605: OAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers

Routine

HIGH 7.2REMOTE

CVE-2026-54605 is a high-severity flaw (CVSS 7.2) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers. From 0.5.5 to 1.1.5, OAuth::Consumer#token_request parses the raw Location header of a 300 to 399 redirect returned by the OAuth server and follows the redirect recursively, which can mutate the consumer's configuration and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This issue is fixed in version 1.1.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-200, CWE-346, CWE-918
Published	2026-07-28
Last modified	2026-10-23

Publisher (CNA): GitHub, Inc.

Timeline

2026-07-28 17:16 UTCPublished CVE record published
2026-10-23 23:10 UTCUpdated Record last modified

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References

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