CVE-2026-78161: Out-of-bounds Write in warmcat libwebsockets
CVE-2026-78161 is an out-of-bounds write vulnerability in warmcat libwebsockets version 4.5.0. It affects the function report_raw_cbor in the LECP CBOR Recording component. The vulnerability can be exploited remotely without authentication. A patch has been identified to fix this issue. The CVSS 4.0 base score is 6.9, indicating a medium severity level.
AI Analysis
Technical Summary
This vulnerability exists in warmcat libwebsockets 4.5.0 within the report_raw_cbor function of the lib/misc/lecp.c file, part of the LECP CBOR Recording component. The flaw allows an attacker to cause an out-of-bounds write, which can be triggered remotely without requiring privileges or user interaction. A patch commit (1d44554a1bb262db63ff4e240152a9deecd99054) has been identified to address this issue. No official remediation level or vendor advisory content is provided in the input data.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to perform an out-of-bounds write, potentially leading to memory corruption. This could result in application instability or other undefined behavior. The CVSS score of 6.9 reflects a medium impact with low complexity and no required privileges or user interaction.
Mitigation Recommendations
A patch has been identified (commit 1d44554a1bb262db63ff4e240152a9deecd99054) to fix this vulnerability. It is recommended to apply this patch to the affected version 4.5.0 of libwebsockets. Patch status is not explicitly confirmed by a vendor advisory; therefore, check the vendor's official resources for the latest remediation guidance.
CVE-2026-78161: Out-of-bounds Write in warmcat libwebsockets
Description
CVE-2026-78161 is an out-of-bounds write vulnerability in warmcat libwebsockets version 4.5.0. It affects the function report_raw_cbor in the LECP CBOR Recording component. The vulnerability can be exploited remotely without authentication. A patch has been identified to fix this issue. The CVSS 4.0 base score is 6.9, indicating a medium severity level.
CVSS v4.0
Score 6.9medium
Affected software
pkg:github/warmcat/libwebsocketscpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in warmcat libwebsockets 4.5.0 within the report_raw_cbor function of the lib/misc/lecp.c file, part of the LECP CBOR Recording component. The flaw allows an attacker to cause an out-of-bounds write, which can be triggered remotely without requiring privileges or user interaction. A patch commit (1d44554a1bb262db63ff4e240152a9deecd99054) has been identified to address this issue. No official remediation level or vendor advisory content is provided in the input data.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker to perform an out-of-bounds write, potentially leading to memory corruption. This could result in application instability or other undefined behavior. The CVSS score of 6.9 reflects a medium impact with low complexity and no required privileges or user interaction.
Mitigation Recommendations
A patch has been identified (commit 1d44554a1bb262db63ff4e240152a9deecd99054) to fix this vulnerability. It is recommended to apply this patch to the affected version 4.5.0 of libwebsockets. Patch status is not explicitly confirmed by a vendor advisory; therefore, check the vendor's official resources for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-23T11:53:19.761Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8b995aacd9273b49af440c
Added to database: 08/24/2026, 01:07:38 UTC
Last enriched: 08/24/2026, 01:22:03 UTC
Last updated: 08/24/2026, 01:22:03 UTC
Views: 4
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