CVE-2026-102555: Red Hat Enterprise Linux 10 · Out-of-bounds Read
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 8.2 High.
Data as of 13 Nov 2026, 12:10 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 8.2 |
|---|
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10libsoup3 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10libsoup3 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportlibsoup3 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6libsoup | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7libsoup | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8libsoup | Affected– | Fixed in– |
AI-suggested
Red Hat advises not to pass untrusted data URIs to the soup_uri_decode_data_uri() function to mitigate this vulnerability. There is no explicit mention of an official patch or fixed version in the advisory content provided.
Description
A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.
References
- access.redhat.com/security/cve/CVE-2026-102555 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2543224 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:83618 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:93583 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:98560 (opens in a new tab)