Technical assessment
Python exploit for CVE-2026-10050, an authentication bypass in Eclipse Jetty's Digest authentication. The script sends a crafted HTTP Digest Authorization header using a colliding password (e.g., '??123') to authenticate as a victim without knowing the real password, exploiting Jetty's lossy ISO-8859-1 encoding.
Backdoor review
No backdoor observed in reviewed code
The PoC is a straightforward Python script that demonstrates the CVE-2026-10050 Digest authentication bypass. It uses only standard library modules (hashlib, re, sys, urllib) to craft HTTP requests with a colliding password. No obfuscation, external network calls beyond the user-supplied target, file writes, persistence mechanisms, or unrelated payloads are present. The script's behavior is fully explained by the vulnerability description and the accompanying documentation.
Model confidence100%
AuthenticationNot required
Languagespython
Target softwareEclipse Jetty
Attack typesauthentication_bypass
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidenceClassification basis and observed behavior
Classification basis
The Python script actively constructs and sends a malicious HTTP request to bypass authentication and gain unauthorized access to a protected resource, which constitutes exploitation.
poc/poc.py:1-8poc/poc.py:18-27poc/poc.py:145-154Requirements
- Target must be running a vulnerable version of Eclipse Jetty with Digest authentication enabled and a user account whose password contains non-ISO-8859-1 characters.
README.md:21-34 - Attacker must know the victim's username and the length of the victim's password.
poc/poc.py:26-27
Observed behavior
- Sends an unauthenticated GET request to a protected resource and parses the 401 WWW-Authenticate Digest challenge.
poc/poc.py:54-65 - Computes a Digest response using a colliding password where non-ISO-8859-1 characters are replaced with '?', mirroring the server's lossy encoding.
poc/poc.py:84-95 - Sends the forged Authorization header and checks for a 200 OK response containing a known marker to confirm successful authentication bypass.
poc/poc.py:105-110poc/poc.py:146-154
Behaviors behind the backdoor verdict
Observables
- Network Connection
- User-supplied target URL (e.g., http://127.0.0.1:18080/protected/secret.txt)The PoC connects only to the target specified by the user to demonstrate the authentication bypass. No other network connections are made.
poc/poc.py:57poc/poc.py:105 - Expected Marker
- EIP-CVE-2026-10050-PROOFThe script checks for this marker in the HTTP response body to confirm successful exploitation. It is a benign string used for verification.
poc/poc.py:51poc/poc.py:151
What the analysis did not establish
- Evidence includes only selected text files (README.md, poc.py, poc_verification_report.md); 12 additional files are unclassified and not analyzed.
- The artifact's behavior is inferred from source code analysis; the code was not executed as part of this analysis.
- Only the three text files (README.md, poc/poc.py, poc_verification_report.md) were reviewed. The evidence envelope indicates 12 unclassified files totaling 14,312 bytes were not analyzed; their content is unknown.
- The review is based solely on static analysis of the provided text; the code was not executed, and no dynamic analysis was performed.
Model interpretationThis review is limited to the supplied PoC code and context. It does not assert that the code works or is safe to execute.