Vulnerability details
CVE-2026-85197
Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload
CVSS 3.1
7.6High
Official description
A flaw was found in libsoup. A malicious HTTP/2 server or a Man-in-the-Middle (MITM) attacker can exploit a heap use-after-free vulnerability in the HTTP/2 client implementation. This occurs when a GNOME application uploads a file using HTTP/2, and the server sends a GOAWAY frame while the file body is being read asynchronously. This can lead to memory corruption, potentially resulting in information disclosure or arbitrary code execution.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.6High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| No product information recorded. | |||
References and advisories
5- https://access.redhat.com/errata/RHSA-2026:68235 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:82728 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-85197 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2528425 issue-trackingx_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/552
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-09-04
- Last updated
- 2026-11-05
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
0.33%
Probability of exploitation in 30 days
27.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-416Use After Free