Low severity · published Jun 20, 2026
CVE-2026-56355
GNU Savannah Administration Savane through 3.17 uses untrusted data as part of authorization
3.7
CVSS
0.4%
EPSS
No
On KEV
Description
GNU Savannah Administration Savane through 3.17 uses untrusted data as part of authorization.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Savane · GNU
3.14 through 3.17 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56355
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56355
cgit.git.savannah.gnu.org
https://cgit.git.savannah.gnu.org/cgit/administration/savane.git/tree/frontend/php/file.php?h=release-3.17#n113
cgit.git.savannah.gnu.org
https://cgit.git.savannah.gnu.org/cgit/administration/savane.git/tree/frontend/php/file.php?h=release-3.17#n123
news.ycombinator.com
https://news.ycombinator.com/item?id=48605220
www.fsf.org
https://www.fsf.org/news/statement-regarding-gnu-savannah-security-reports
www.hacktron.ai
https://www.hacktron.ai
www.mallory.ai
https://www.mallory.ai/stories/019ee445-bdd4-7775-93b5-a8faaf5c2eb7
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