Glib: integer overflow leading to buffer underflow and out-of-bounds write in glib g_base64_encode()
Historical advisory recorded 5 Nov 2026 17:36:21 UTC. Read the latest advisory.
cve-program · CVE-2026-1484
PublishedA flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocated buffer. Applications that process untrusted or extremely large Base64 input using GLib may crash or behave unpredictably.
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cve-program · CVE-2026-1484
PublishedGlib: integer overflow leading to buffer underflow and out-of-bounds write in glib g_base64_encode()
A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocated buffer. Applications that process untrusted or extremely large Base64 input using GLib may crash or behave unpredictably.
- Source published
- 27 Jan 2026 13:41:54 UTC
- Source modified
- 5 Nov 2026 16:40:25 UTC
- Saved here
- 5 Nov 2026 17:36:21 UTC
- Source terms
- CVE Program Terms of Use
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Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 4.2 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L