CVE-2026-10050

9.1 CRITICALpublic exploit available

Published 2026-08-04 · Updated 2026-08-08

AI risk analysis

Summary: The flaw allows an attacker to bypass authentication by crafting a password with non-ISO-8859-1 characters, which are silently replaced by '?'.
Exploitability: Exploitation is relatively easy if the attacker knows the password length and can craft a request with a password made of '?' characters.
Blast radius: If exploited, this could lead to unauthorized access to protected resources, especially in systems where sensitive data or administrative functions are accessible via digest authentication.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to Jetty 11.0.0 or later, as the fix is included in this version.

auth-bypasswebdigest-authiso-8859-1

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

In Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as bytes. This was done because the initial specification for HTTP did not specify explicitly a charset, and it was assumed to be ISO-8859-1 for historical reasons. If the password contains characters that cannot be represented in ISO-8859-1, they are silently replaced by `?`. This happens with passwords that contain Chinese, Cyrillic or Greek characters, for example: `αβ123` converts to `??123`. An attacker can send a request with a digest `Authorization` header crafted with a password made of only `?` characters; the server would match any password of the same length that contains non-ISO-8859-1 characters. Recent HTTP Digest [RFC-7616](https://datatracker.ietf.org/doc/html/rfc7616) supports a `charset` parameters that defaults to UTF-8 that allows for correct encoding/decoding of passwords.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

CWE-173, CWE-303

Vendors

eclipse

Products

jetty

Public exploit & PoC references

https://github.com/jetty/jetty.project/security/advisories/GHSA-2fvj-hgj9-j2gr Vendor Advisory, Exploit
https://github.com/jetty/jetty.project/security/advisories/GHSA-2fvj-hgj9-j2gr Vendor Advisory, Exploit

References

https://github.com/jetty/jetty.project/security/advisories/GHSA-2fvj-hgj9-j2gr Vendor Advisory, Exploit
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/120 Issue Tracking
https://github.com/jetty/jetty.project/security/advisories/GHSA-2fvj-hgj9-j2gr Vendor Advisory, Exploit

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.