CVE-2026-58011

MEDIUM
Published June 30, 2026

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic...

Full CISO analysis pending enrichment.

What systems are affected?

Package Ecosystem Vulnerable Range Patched
vLLM pip — No patch
92.7K 95 dependents Pushed 3d ago 26% patched ~47d to patch Full package profile →
vLLM pip — No patch
92.7K 95 dependents Pushed 3d ago 26% patched ~47d to patch Full package profile →
GLib — — No patch
cert-manager/cert-manager-istio-csr-rhel9 — — No patch
cert-manager/cert-manager-operator-rhel9 — — No patch
cert-manager/cert-manager-trust-manager-rhel9 — — No patch
cert-manager/jetstack-cert-manager-acmesolver-rhel9 — — No patch
cert-manager/jetstack-cert-manager-rhel9 — — No patch
discovery/discovery-server-rhel9 — — No patch
discovery/discovery-ui-rhel9 — — No patch
glib2 — — No patch
mingw-glib2 — — No patch
rhai/base-image-cpu-rhel9 — — No patch
rhai/base-image-cuda-rhel9 — — No patch
rhai/base-image-rocm-rhel9 — — No patch
rhai/base-image-spyre-rhel9 — — No patch
rhai/base-image-tpu-rhel9 — — No patch
rhaiis/model-opt-cuda-rhel9 — — No patch
rhui5/cds-kubernetes-rhel9 — — No patch
rhui5/cds-kubernetes-tp-rhel9 — — No patch
rhui5/cds-rhel9 — — No patch
rhui5/haproxy-rhel9 — — No patch
rhui5/installer-rhel9 — — No patch
rhui5/installer-tp-rhel9 — — No patch
rhui5/rhua-rhel9 — — No patch
rhui5/rhua-tp-rhel9 — — No patch

How severe is it?

CVSS 3.1
6.5 / 10
EPSS
N/A
Exploitation Status
No known exploitation
Sophistication
N/A

What is the attack surface?

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

What should I do?

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Which compliance frameworks are affected?

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is CVE-2026-58011?

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.

Is CVE-2026-58011 actively exploited?

No confirmed active exploitation of CVE-2026-58011 has been reported, but organizations should still patch proactively.

How to fix CVE-2026-58011?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2026-58011?

CVE-2026-58011 has a CVSS v3.1 base score of 6.5 (MEDIUM).

What are the technical details?

Original Advisory

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.

Weaknesses (CWE)

CWE-125 — Out-of-bounds Read: The product reads data past the end, or before the beginning, of the intended buffer.

  • [Implementation] Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue." Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylis
  • [Architecture and Design] Use a language that provides appropriate memory abstractions.

Source: MITRE CWE corpus.

CVSS Vector

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

References

Timeline

Published
June 30, 2026
Last Modified
September 30, 2026
First Seen
September 30, 2026

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