Information Exposure Affecting kserve package, versions <0.21.0-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-WOLFILATEST-KSERVE-20367180
  • published1 Oct 2026
  • disclosed13 Oct 2026

Introduced: 1 Oct 2026

NewCVE-2026-49265  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

Upgrade Wolfi kserve to version 0.21.0-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kserve package and not the kserve package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 3.0.0 until 4.0.0, OAuthLib's PKCE checks in oauthlib/oauth2/rfc6749/grant_types/authorization_code.py compare attacker-supplied code_verifier values with stored challenges using ordinary string equality in code_challenge_method_plain and code_challenge_method_s256. Because the comparison can return after a length difference or the first mismatching character, repeated token endpoint measurements can reveal common-prefix timing information that could potentially allow recovery of the code_verifier, unauthorized access-token acquisition, and account takeover. Practical exploitation requires an intercepted, single-use authorization code and enough measurements to overcome real-world network noise; the local timing benchmark does not establish practical remote account takeover, so the weakness remains a defense-in-depth concern. This issue is fixed in version 4.0.0.

CVSS Base Scores

version 3.1