CVE-2025-63914: An issue was discovered in Cinnamon kotaemon 0.11.0

Routine

MEDIUM 6.5DOWNGRADE

CVE-2025-63914 is a medium-severity flaw (CVSS 6.5) affecting kotaemon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder that is cleared before each extraction, successfully uploading a ZIP bomb could still cause the server to consume excessive resources during decompression. Moreover, if no further files are uploaded afterward, t

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-409
Published	2025-11-24
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

2025-11-24 20:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

cinnamon kotaemon DOWNGRADE

Affected: 0.11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.11.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.11.0 (Debian / Ubuntu)

apt-cache madison kotaemon sudo apt install kotaemon=<VERSION_BEFORE_0.11.0> sudo apt-mark hold kotaemon

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kotaemon sudo dnf downgrade kotaemon-<VERSION_BEFORE_0.11.0> sudo dnf versionlock add kotaemon

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-63914?

kotaemon: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63914 being exploited?

CVE-2025-63914 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-2025-63914 affect?

CVE-2025-63914 affects kotaemon. Severity is medium (CVSS 6.5). An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder t

How urgent is CVE-2025-63914?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2025-56527 HIGH 7.5 UPGRADE Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage.
CVE-2025-56526 MEDIUM 6.1 UPGRADE Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a

References

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