CVE-2025-11021
High
Description
A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Libsoup
PublishedSep 26, 2025
First seenSep 26, 2025
Weakness typeCWE-125Out-of-bounds read
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2025:18183
- access.redhat.com/errata/RHSA-2025:19713
- access.redhat.com/errata/RHSA-2025:19714
- access.redhat.com/errata/RHSA-2025:20959
- access.redhat.com/errata/RHSA-2025:21032
- access.redhat.com/errata/RHSA-2025:21655
- access.redhat.com/errata/RHSA-2025:21656
- access.redhat.com/errata/RHSA-2025:21657
- access.redhat.com/errata/RHSA-2025:21664
- access.redhat.com/errata/RHSA-2025:21665
- access.redhat.com/errata/RHSA-2025:21666
- access.redhat.com/errata/RHSA-2025:21772
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libsoup | v ≤ 3.6.5 | — |
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support | No range specified | — |
| enterprise_linux 8 | No range specified | — |
| rhel_aus 8.2 | No range specified | — |
| rhel_aus 8.4 | No range specified | — |
| rhel_aus 8.6 | No range specified | — |
| rhel_e4s 8.8 | No range specified | — |
| enterprise_linux 9 | No range specified | — |
| rhel_e4s 9.0 | No range specified | — |
| rhel_e4s 9.2 | No range specified | — |
| rhel_eus 9.4 | No range specified | — |
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