How severe is CVE-2025-63914?

CVE-2025-63914 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-63914 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63914?

CVE-2025-63914 affects Cinnamon Kotaemon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63914?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-63914 have an EU (EUVD) identifier?

Yes. CVE-2025-63914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198989.

When was CVE-2025-63914 published?

CVE-2025-63914 was published on 2025-11-24 and last updated on 2026-06-17.

CVE-2025-63914

CVE-2025-63914 is a medium-severity vulnerability in Cinnamon Kotaemon with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-409.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198989
Weakness: CWE-409
Affected product: Cinnamon Kotaemon
Published: 2025-11-24
Last modified: 2026-06-17

Description

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, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack.

Frequently asked questions

What is CVE-2025-63914?: 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, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack.
How severe is CVE-2025-63914?: CVE-2025-63914 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-63914 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63914?: CVE-2025-63914 affects Cinnamon Kotaemon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63914?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63914 have an EU (EUVD) identifier?: Yes. CVE-2025-63914 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198989.
When was CVE-2025-63914 published?: CVE-2025-63914 was published on 2025-11-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cinnamon:kotaemon:0.11.0:*:*:*:*:*:*:*

More vulnerabilities in Cinnamon Kotaemon

CVE-2025-56527 — High (CVSS 7.5): Plaintext password storage in Kotaemon 0.11.0 in the client's localStorage.
CVE-2025-56526 — Medium (CVSS 6.1): Cross site scripting (XSS) vulnerability in Kotaemon 0.11.0 allowing attackers to execute arbitrary code via a crafted…

All CVEs affecting Cinnamon Kotaemon →

Other CWE-409 vulnerabilities

CVE-2026-62963 — High (CVSS 8.7): Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket…
CVE-2026-55195 — High (CVSS 8.7): py7zr is a Python-based library and utility to support 7zip archive compression, decompression, encryption and…
CVE-2026-53430 — High (CVSS 8.7): Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-grpc grpc…
CVE-2026-44697 — High (CVSS 8.6): Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, a remote, unauthenticated…
CVE-2026-44981 — High (CVSS 8.2): CrowdSec offers crowdsourced protection against malicious IPs. From 1.7.0 until 1.7.8, the LAPI router used…
CVE-2026-43970 — High (CVSS 8.2): Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows…

Browse all CWE-409 vulnerabilities →