Calling curl_easy_pause() within the event-based CURLMOPT_SOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to… (CVE-2026-9080)
Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.
AI Analysis
Technical Summary
The vulnerability (CVE-2026-9080) occurs when curl_easy_pause() is invoked inside the event-based CURLMOPT_SOCKETFUNCTION callback, triggering a use-after-free condition. Libcurl attempts to store a flag using a struct pointer that has already been freed, leading to unsafe memory access. This flaw affects several specific versions of curl, including 3.0, 8.12.1-3ubuntu1, 8.13.0-5ubuntu1, and various 8.14.x and 8.18.x Ubuntu package versions. The CVSS 3.1 score is 7.3, indicating a high-severity vulnerability with network attack vector, low attack complexity, no privileges or user interaction required, and impacts confidentiality, integrity, and availability. A patch is available to remediate the issue.
Potential Impact
Exploitation of this vulnerability could allow an attacker to cause memory corruption in libcurl, potentially leading to denial of service or other unintended behavior. The CVSS score of 7.3 reflects significant impact on confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users should apply the official fixes provided for the affected curl versions to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Calling curl_easy_pause() within the event-based CURLMOPT_SOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to… (CVE-2026-9080)
Description
Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.
CVSS v3.1
Score 7.3high
Affected software
pkg:deb/ubuntu/curl?arch=source&distro=questingpkg:deb/ubuntu/curl?arch=source&distro=resoluteRun 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
The vulnerability (CVE-2026-9080) occurs when curl_easy_pause() is invoked inside the event-based CURLMOPT_SOCKETFUNCTION callback, triggering a use-after-free condition. Libcurl attempts to store a flag using a struct pointer that has already been freed, leading to unsafe memory access. This flaw affects several specific versions of curl, including 3.0, 8.12.1-3ubuntu1, 8.13.0-5ubuntu1, and various 8.14.x and 8.18.x Ubuntu package versions. The CVSS 3.1 score is 7.3, indicating a high-severity vulnerability with network attack vector, low attack complexity, no privileges or user interaction required, and impacts confidentiality, integrity, and availability. A patch is available to remediate the issue.
Potential Impact
Exploitation of this vulnerability could allow an attacker to cause memory corruption in libcurl, potentially leading to denial of service or other unintended behavior. The CVSS score of 7.3 reflects significant impact on confidentiality, integrity, and availability. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users should apply the official fixes provided for the affected curl versions to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hf34-v47h-w6m3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-9080"]
- Cvss Version
- 3.1
Threat ID: 6a483cb427e9c79719d81f65
Added to database: 07/03/2026, 22:50:28 UTC
Last enriched: 09/26/2026, 05:12:46 UTC
Last updated: 10/02/2026, 14:46:12 UTC
Views: 94
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