CVE-2025-6494
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BaseFortify

Publication date: 2025-06-22

Last updated on: 2026-04-29

Assigner: VulDB

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.
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Meta Information
Published
2025-06-22
Last Modified
2026-04-29
Generated
2026-05-07
AI Q&A
2025-06-23
EPSS Evaluated
2026-05-05
NVD
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a heap-based buffer overflow in the function hashmap_get_with_hash within the file gumbo-parser/src/hashmap.c of sparklemotion nokogiri up to version 1.18.7. It occurs due to improper manipulation of memory, which can lead to unexpected behavior or crashes. The vulnerability requires local access to exploit and has been publicly disclosed.


How can this vulnerability impact me? :

The vulnerability can lead to a heap-based buffer overflow, which may cause application crashes or potentially allow an attacker with local access to execute arbitrary code or disrupt normal operation. However, the attack requires local access and does not involve user interaction.


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