CVE-2026-58014

highCVSS 7.3covered by 2 sourcesfirst seen 2026-06-09

A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundary.

CSIRTS triage

What: An off-by-one error exists in the function 'g_key_file_get_locale_string_list'.
Who is affected: Deployments of Glib that use the affected function.
Urgency: Remediation is urgent due to the high severity of the vulnerability.
Action: Update to the latest version of Glib to address this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.

Advisory coverage (2)

highCVE-2026-58014: A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_li…nvd · 2026-06-30
highCVE-2026-58014: Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"msrc · 2026-06-09

External references

NVD record for CVE-2026-58014

CVE.org record

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