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CVE-2025-6494

3.3 · LOW

A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833.

Published Jun 22, 2025CWE-119EPSS 0.18%

Overview

CVE-2025-6494 is a low-severity vulnerability. It was published on June 22, 2025 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833. It has been classified as problematic. This affects the function hashmap_get_with_hash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The patch is named ada4708e5a67114402cd3feb70a4e1d1d7cf773a. It is recommended to apply a patch to fix this issue. The project maintainer explains that the affected code was merged into the main branch but the commit never appeared in an official release.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/sparklemotion/nokogiri/commit/ada4708e5a67114402cd3feb70a4e1d1d7cf773aGitHubgithub.com/sparklemotion/nokogiri/issues/3508GitHubgithub.com/sparklemotion/nokogiri/pull/3524GitHubgithub.com/user-attachments/files/19825279/nokogiri_crash_2.txtRefvuldb.com/?ctiid.313611Refvuldb.com/?id.313611Refvuldb.com/?submit.601006

How CyberStrike helps

Frequently asked questions

What is CVE-2025-6494?

CVE-2025-6494 is a low-severity vulnerability. It was published on June 22, 2025 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2025-6494?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-6494?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-6494?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-6494 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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