CVE-2026-58011
MEDIUMA 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?
How severe is it?
What is the attack surface?
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
- access.redhat.com/errata/RHSA-2026:49512 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:55440 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:57015 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:58981 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:61766 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:61783 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:63135 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:63138 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:63140 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65762 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65763 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65767 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65768 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65769 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65770 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65771 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:65773 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:66018 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72394 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72395 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72399 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72470 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72475 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72476 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:72502 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73859 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73909 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73929 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73930 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73959 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73960 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73961 vendor-advisory x_refsource_REDHAT
- access.redhat.com/errata/RHSA-2026:73962 vendor-advisory x_refsource_REDHAT
- access.redhat.com/security/cve/CVE-2026-58011 vdb-entry x_refsource_REDHAT
- bugzilla.redhat.com/show_bug.cgi issue-tracking x_refsource_REDHAT
- gitlab.gnome.org/GNOME/glib/-/issues/3917
Timeline
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