CVE-2026-25575Public exploitNetwork attack vector

Unauthenticated file overwrite via unsanitized image key

Published Feb 4, 2026 · Updated Feb 4, 2026

Path traversal in NavigaTUM before commit 86f34c7 allows remote attackers to overwrite application-writable files through propose_edits. The image_should_be_saved_at function inserts each user-controlled edits-map key into a Path::join destination without rejecting traversal sequences or separators. No authentication is required; crafted JSON can escape the temporary image directory to replace public-facing images, while rate limiting constrains storage-exhaustion attempts.

CVSS severity8.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in NavigaTUM before commit 86f34c7 allows remote attackers to overwrite application-writable files through propose_edits. The image_should_be_saved_at function inserts each user-controlled edits-map key into a Path::join destination without rejecting traversal sequences or separators. No authentication is required; crafted JSON can escape the temporary image directory to replace public-facing images, while rate limiting constrains storage-exhaustion attempts.

The record

CVE
CVE-2026-25575
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
OpenSource @ TUM e.V.
Product
NavigaTUM
Classifications
CWE-26, CWE-23, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 86f34c72886a59ec8f1e6c00f78a5ab889a70fd0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenSource @ TUM e.V. · NavigaTUMversion=< 86f34c72886a59ec8f1e6c00f78a5ab889a70fd0

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
8.8GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-26Path Traversal: '/dir/../filename'
CWE-23Relative Path Traversal
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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