# CVE-2026-2436: A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()

Source: https://junglewise.ai/threats/cve-2026-2436-a-flaw-was-found-in-libsoup-s-soupserver-a-remote-attacker-could  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-26  
License: CC BY 4.0 with a link back

CVE-2026-2436 · Severity: medium · CVSS 6.5 · Published 2026-03-26

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` 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.

Technologies: [Gnome Libsoup](https://junglewise.ai/threats/technologies/libsoup), [Redhat Enterprise Linux](https://junglewise.ai/threats/technologies/enterprise-linux). Vendors: [Gnome](https://junglewise.ai/threats/vendors/gnome), [Redhat](https://junglewise.ai/threats/vendors/redhat).

## Quick answers

**Is CVE-2026-2436 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-2436 being exploited in the wild.

**How severe is CVE-2026-2436?** Medium severity, with a CVSS score of 6.5, published 26 March 2026.

**Which products and versions are affected?** Gnome Libsoup, Redhat Enterprise Linux. The advisory does not name versions.

**Is there a fix for CVE-2026-2436?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-2436?** Check whether you run Gnome Libsoup or Redhat Enterprise Linux. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Gnome Libsoup
- Redhat Enterprise Linux

## Related threats

- [libsoup HTTP request smuggling via undrained Expect: 100-continue body](https://junglewise.ai/threats/cve-2026-103399-a-flaw-was-found-in-soupserver-libsoup-when-an-http-1-x-client)
- [libsoup heap buffer overflow in permessage-deflate WebSocket extension](https://junglewise.ai/threats/cve-2026-102560-a-flaw-was-found-in-libsoup-when-the-permessage-deflate)
- [libsoup heap buffer overflow in WebSocket handling](https://junglewise.ai/threats/cve-2026-102558-a-flaw-was-found-in-libsoup-when-max-incoming-payload-size-is)
- [libsoup out-of-bounds read in data-URI base64 decoding](https://junglewise.ai/threats/cve-2026-102555-a-flaw-was-found-in-libsoup-the-soup-uri-decode-data-uri)
- [libsoup heap corruption in WebSocket message reassembly](https://junglewise.ai/threats/cve-2026-102557-a-flaw-was-found-in-libsoup-when-reassembling-fragmented)