CVE-2025-56526: Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a

Q: How do I fix CVE-2025-56526?

kotaemon: upgrade to newer than 0.11.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-56526 being exploited?

CVE-2025-56526 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-56526 affect?

CVE-2025-56526 affects kotaemon. Severity is medium (CVSS 6.1). Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF.

Q: How urgent is CVE-2025-56526?

Priority 36/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2025-56526 is a medium-severity flaw (CVSS 6.1) affecting kotaemon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cinnamon

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-18 17:16 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

cinnamon kotaemon UPGRADE

Affected: <= 0.11.0

Fixed in: newer than 0.11.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kotaemon || rpm -q kotaemon || kotaemon --version

2. UPGRADE to newer than 0.11.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kotaemon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kotaemon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-56526?

kotaemon: upgrade to newer than 0.11.0. Exact commands for each OS are on this page.

Is CVE-2025-56526 being exploited?

CVE-2025-56526 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-56526 affect?

CVE-2025-56526 affects kotaemon. Severity is medium (CVSS 6.1). Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted PDF.

How urgent is CVE-2025-56526?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2025-63914 MEDIUM 6.5 DOWNGRADE An issue was discovered in Cinnamon kotaemon 0.11.0
CVE-2025-56527 HIGH 7.5 UPGRADE Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage.

References

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