CVE-2026-2436
A flaw was found in libsoup's SoupServer.
Published Mar 26, 2026 · corrected/updated Jun 17, 2026 · gnome libsoup · evidence confidence medium
A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-2436 is a high public vulnerability record for gnome libsoup. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether gnome libsoup is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: gnome/libsoup; redhat/enterprise linux (10.0); redhat/enterprise linux (6.0); redhat/enterprise linux (7.0). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 8.2. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-825. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 26, 2026 · NIST NVD
Detected
A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.
Jun 17, 2026 · NIST NVD
Updated
A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.
Affected
- cpe gnome/libsoupversion unspecified
- cpe redhat/enterprise linux10.0
- cpe redhat/enterprise linux6.0
- cpe redhat/enterprise linux7.0
- cpe redhat/enterprise linux8.0
- cpe redhat/enterprise linux9.0
Sources
- CVE.orgVulnerability recordCVE-2026-2436
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-2436
A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection o
nvd.nist.gov