CVE-2026-58013

HIGH
MEDIUM Priority: 0.04 BB Relevance: 77/100
Published: 2026-06-30 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: High

Description

A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

Weakness Classification (1)

Affected Software (7)

References & Advisories (78)

https://access.redhat.com/errata/RHSA-2026:49512
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55440
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57015
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:58981
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:61766
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:61783
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:63135
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:63138
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:63140
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65762
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65763
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65767
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65768
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65769
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65770
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65771
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65773
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:66018
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72394
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72395
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72399
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72470
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72475
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72476
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:72502
vendor-advisory x_refsource_REDHAT
Showing 25 of 78 references

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.2 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

EPSS — Exploitation Probability

0.50%
Raw Score 0.005010
Percentile 42.8%
Date 2026-10-29

Intelligence Sources

mitre ref →
nvd ref →