Log in Start free

Vulnerability · Published May 28, 2026 · Assigned by redhat

CVE-2026-10028Glib-networking: infinite loop in glib-networking gnutls backend allows remote denial of service via circular certificate chain

Medium 4.3

In plain English

A medium-severity infinite loop in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 92.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in glib-networking. A remote attacker can exploit this vulnerability by presenting a specially crafted certificate chain to an application that uses glib-networking with the GnuTLS backend enabled and performs certificate verification. This crafted chain, which contains circular issuer relationships, can cause an infinite loop during certificate verification. The unbounded traversal consumes excessive CPU resources, leading to a denial of service for the affected process or worker.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12glib-networkingno fix listedDEBIAN-CVE-2026-10028
Debian:13glib-networkingno fix listedDEBIAN-CVE-2026-10028
Debian:14glib-networking2.90.0-1DEBIAN-CVE-2026-10028
Ubuntu:22.04:LTSglib-networkingno fix listedUBUNTU-CVE-2026-10028
Ubuntu:24.04:LTSglib-networkingno fix listedUBUNTU-CVE-2026-10028
Ubuntu:25.10glib-networkingno fix listedUBUNTU-CVE-2026-10028
Ubuntu:26.04:LTSglib-networkingno fix listedUBUNTU-CVE-2026-10028
Ubuntu:26.10glib-networkingno fix listedUBUNTU-CVE-2026-10028

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References