CVE-2025-59941
go-f3 is Vulnerable to Cached Justification Verification Bypass
Description
go-f3 is a Golang implementation of Fast Finality for Filecoin (F3). In versions 0.8.8 and below, go-f3's justification verification caching mechanism has a vulnerability where verification results are cached without properly considering the context of the message. An attacker can bypass justification verification by submitting a valid message with a correct justification and then reusing the same cached justification in contexts where it would normally be invalid. This occurs because the cached verification does not properly validate the relationship between the justification and the specific message context it's being used with. This issue is fixed in version 0.8.9.
INFO
Published Date :
Sept. 29, 2025, 11:15 p.m.
Last Modified :
Oct. 9, 2026, 9:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update go-f3 to version 0.8.9 or later.
- Apply relevant security patches for older versions if available.
- Review caching mechanisms for proper context validation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-59941.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-59941 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-59941
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-59941 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-59941 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 09, 2026
Action Type Old Value New Value Added Translation Title: go-f3 de filecoin-project, Description: go-f3 es una implementación en Golang de Fast Finality para Filecoin (F3). En las versiones 0.8.8 e inferiores, el mecanismo de caché de verificación de justificación de go-f3 tiene una vulnerabilidad donde los resultados de la verificación se almacenan en caché sin considerar adecuadamente el contexto del mensaje. Un atacante puede eludir la verificación de justificación al enviar un mensaje válido con una justificación correcta y luego reutilizar la misma justificación almacenada en caché en contextos donde normalmente sería inválida. Esto ocurre porque la verificación almacenada en caché no valida adecuadamente la relación entre la justificación y el contexto específico del mensaje con el que se está utilizando. Este problema está solucionado en la versión 0.8.9. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'filecoin-project', 'product': 'go-f3', 'versions': [{'status': 'affected', 'version': '< 0.8.9'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-59941', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2025-09-30T14:13:50.946398Z'} -
Initial Analysis by [email protected]
Oct. 18, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L Added CPE Configuration OR *cpe:2.3:a:filecoin:go-f3:*:*:*:*:*:*:*:* versions up to (excluding) 0.8.9 Added Reference Type GitHub, Inc.: https://github.com/filecoin-project/go-f3/commit/76fff18cf07b21baccf537024bdb2fb41f75f6e2#diff-e1f646cea41790e1642e4e649c9e3c526344736d67222201703e1c29c23e9625 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/filecoin-project/go-f3/security/advisories/GHSA-7pq9-rf9p-wcrf Types: Vendor Advisory -
New CVE Received by [email protected]
Sep. 29, 2025
Action Type Old Value New Value Added Description go-f3 is a Golang implementation of Fast Finality for Filecoin (F3). In versions 0.8.8 and below, go-f3's justification verification caching mechanism has a vulnerability where verification results are cached without properly considering the context of the message. An attacker can bypass justification verification by submitting a valid message with a correct justification and then reusing the same cached justification in contexts where it would normally be invalid. This occurs because the cached verification does not properly validate the relationship between the justification and the specific message context it's being used with. This issue is fixed in version 0.8.9. Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L Added CWE CWE-305 Added Reference https://github.com/filecoin-project/go-f3/commit/76fff18cf07b21baccf537024bdb2fb41f75f6e2#diff-e1f646cea41790e1642e4e649c9e3c526344736d67222201703e1c29c23e9625 Added Reference https://github.com/filecoin-project/go-f3/security/advisories/GHSA-7pq9-rf9p-wcrf