Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Net::OAuth versions before 0.33 for Perl check HMAC-SHA1, HMAC-SHA256 and PLAINTEXT signatures with a non-constant-time comparison in verify. Each of the three compares the signature carried in the message against the locally computed one with the eq operator, which returns as soon as the two strings differ. The time taken to reject a signature varies with the length of the matching prefix. RSA-SHA1 is not affected, as it verifies through the RSA key object rather than by comparing strings. A client that can submit messages and time the replies may recover a valid signature one byte at a time rather than searching the whole signature space. Under PLAINTEXT the value compared against is the signature key itself, so the search recovers consumer_secret and token_secret.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2026-75589 Net::OAuth versions before 0.33 for Perl check HMAC-SHA1, HMAC-SHA256 and PLAINTEXT signatures with a non-constant-time comparison in verify. Each of the three compa… https://www.cve.org/CVERecord?id=CVE-2026-75589
Post summary
The statement outlines CVE‑2026‑75589, detailing a timing‑attack vulnerability in Net::OAuth’s signature verification logic for Perl implementations.
CVE-2026-75589 Timing Attack Vulnerability in Net::OAuth for Perl Before 0.33 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-75589
Post summary
The snippet announces a timing‑attack vulnerability in Net::OAuth for Perl versions prior to 0.33, providing the CVE identifier and basic technical detail, but no proof of concept, exploit code, patch, or active exploitation information.