CVE-2026-0988 | Glib: glib: denial of service via integer overflow in g_buffered_input_stream_peek()

A flaw was found in glib. Missing validation of offset and count parameters in the g_buffered_input_stream_peek() function can lead to an integer overflow during length calculation. When specially crafted values are provided, this overflow results in an incorrect size being passed to memcpy(), triggering a buffer overflow. This can cause application crashes, leading to a Denial of Service (DoS).

Published: 2026-01-21 Last update: 2026-04-24 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-0988 is rated Low Risk (16.7/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-0988

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 0.05% 0.02% -0.03%
2 2026-01-27 0.04% 0.05% +0.01%
3 2026-01-21 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-0988

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.7 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.2 1.4 [email protected]

Weakness enumeration for CVE-2026-0988

GitHub Security Advisory for CVE-2026-0988

GHSA-m2x7-c9gp-xc46 · Severity: low — A flaw was found in glib. Missing validation of offset and count parameters in the...

OS Trackers for CVE-2026-0988

vendor priority summary link
debian not yet assigned CVE-2026-0988 not yet assigned priority: Debian including 1 source packages (glib2.0), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-0988
redhat low — https://access.redhat.com/security/cve/CVE-2026-0988
suse low CVE-2026-0988 severity low: SUSE including 428 source package names (13.2-9.67:coreutils-9.4-5.1, 13.2-9.67:libglib-2_0-0-2.76.2-12.1, …), 1823 product×package rows across 242 product lines (Container suse/manager/4.3/proxy-httpd, Container suse/manager/4.3/proxy-salt-broker, … (242 product lines)): Fixed 1575, Known Affected 231, First Fixed 17. https://www.suse.com/security/cve/CVE-2026-0988/
ubuntu medium CVE-2026-0988 medium priority: Ubuntu including 1 source packages (glib2.0), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needed 4, released 4. https://ubuntu.com/security/CVE-2026-0988

Affected software / configurations for CVE-2026-0988

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-0988

cvelogic Threat Intelligence