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CVE-2026-31844

29
FAUCET Score

CVE-2026-31844 is a high-severity authenticated SQL Injection vulnerability (CWE-89) affecting the Koha library management system's staff interface, specifically in the /cgi-bin/koha/suggestion/suggestion.pl endpoint due to improper validation of the 'displayby' parameter. A low-privileged staff user can exploit this with low complexity via crafted network requests, potentially leading to full compromise of the backend database and high impact to confidentiality, integrity, and availability of stored data. Currently, there is no evidence of active exploitation, public exploit code, or significant community and media attention for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 24.11.0, < 24.11.12CPE matchmatch criteria
cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*
>= 25.05.0, < 25.05.07CPE matchmatch criteria
cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*
25.11.00CPE matchmatch criteria
cpe:2.3:a:koha:koha:25.11.00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 24th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.koha-community.org / bugzilla3/show_bug.cgi
Issue Tracking
koha-community.gitlab.io / KohaAdvent/2025-12-09-security-all
Not Applicable
koha-community.org / koha-25-11-01-released
Release Notes