Is CVE-2026-58013 in the CISA KEV catalog?

No. CVE-2026-58013 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-58013?

CVE-2026-58013 has a CVSS v3 base score of 6.5 (Moderate).

How do I fix CVE-2026-58013?

Upgrade glib2.0 on debian unstable to 2.88.1-2 or later.

CVE & CISA-KEV Catalog

CVE-2026-58013

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-126Buffer Over-read

How to fix

Remediation Available

glib2.0Debian

Fixed in:2.88.1-2CVE-2026-58013

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Exploit Intelligence

EPSS data unavailable for this CVE.

References

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.