How severe is CVE-2026-13509?

CVE-2026-13509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-13509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-13509?

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

When was CVE-2026-13509 published?

CVE-2026-13509 was published on 2026-06-28 and last updated on 2026-06-29.

CVE-2026-13509

CVE-2026-13509 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Published: 2026-06-28
Last modified: 2026-06-29

Description

A vulnerability has been found in RAGapp up to 0.1.5. Affected is the function FileHandler.upload_file/FileHandler.remove_file of the file src/ragapp/backend/controllers/files.py of the component Knowledge File Handler. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.

Frequently asked questions

What is CVE-2026-13509?: A vulnerability has been found in RAGapp up to 0.1.5. Affected is the function FileHandler.upload_file/FileHandler.remove_file of the file src/ragapp/backend/controllers/files.py of the component Knowledge File Handler. Such manipulation leads to path traversal. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.
How severe is CVE-2026-13509?: CVE-2026-13509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-13509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-13509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-13509 published?: CVE-2026-13509 was published on 2026-06-28 and last updated on 2026-06-29.

References

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