CVE-2026-58010

MEDIUM

Glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-58010. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-58010, an off-by-one error in GLib's gvs_tuple_is_normal function (glib/gvariant-serialiser.c). The code includes placeholder methods for probing targets but lacks actual exploit implementation or technical details about the vulnerability's exploitation.

Description

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.

Exploits (1)

github STUB 1 stars
by HermesNA-1 · pythonpoc
https://github.com/HermesNA-1/SnakeSploit/tree/main/data/modules_generated/cve-2026-58010_flaw_was_found.py

This repository contains an auto-generated stub module for CVE-2026-58010, an off-by-one error in GLib's gvs_tuple_is_normal function (glib/gvariant-serialiser.c). The code includes placeholder methods for probing targets but lacks actual exploit implementation or technical details about the vulnerability's exploitation.

Classification
Stub 98%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: GLib (unspecified version)
No auth needed
Prerequisites: Network access to target service using GLib's GVariant serialization
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →

References (3)

Core 3
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-58010
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2492243
https://bugzilla.redhat.com/show_bug.cgi?id=2492243

Scores

CVSS v3 6.5
EPSS 0.0032
EPSS Percentile 24.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-126
Status published
Products (15)
gnome/glib 2.88.0
GNOME/GLib < 2.86.5
gnome/glib < 2.86.5
GNOME/GLib < 2.88.1
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat Hardened Images
... and 5 more
Published Jun 30, 2026
Tracked Since Jun 30, 2026