CVE-2025-6494
sparklemotion nokogiri hashmap.c hashmap_get_with_hash heap-based overflow
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jun 22, 2025
- Updated
- Jun 30, 2025
- Reserved
- Jun 22, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
nokogirisparklemotion |
|
References
- VDB-313611 | sparklemotion nokogiri hashmap.c hashmap_get_with_hash heap-based overflowvdb-entrytechnical-description
- VDB-313611 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #601006 | sparklemotion nokogiri nokogiri v1.18.7 (commit a024cff) Heap-based Buffer Overflowthird-party-advisory
- https://github.com/sparklemotion/nokogiri/issues/3508issue-tracking
- https://github.com/sparklemotion/nokogiri/pull/3524issue-tracking
- https://github.com/user-attachments/files/19825279/nokogiri_crash_2.txtexploit
- https://github.com/sparklemotion/nokogiri/commit/ada4708e5a67114402cd3feb70a4e1d1d7cf773apatch
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