CVE-2026-58451 (GCVE-0-2026-58451)
Vulnerability from cvelistv5 – Published: 2026-07-01 18:16 – Updated: 2026-07-14 22:03 X_Open Source
VLAI
EPSS
VEX
Title
Horde IMP < 7.0.1 Path Traversal via Compose.php img src
Summary
Horde IMP before 7.0.1 contains a path traversal vulnerability in lib/Compose.php that allows authenticated attackers to read arbitrary files from the server filesystem by embedding traversal sequences after a CKEditor path prefix in img src URLs. Attackers can bypass the stripos() prefix validation by appending sequences such as traversal segments after the matching prefix, causing file_get_contents() to read sensitive files whose contents are then exfiltrated as MIME parts in outgoing email; unauthenticated exploitation is also achievable via CSRF against an active authenticated session.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 18:41 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/horde/imp/releases/tag/v7.0.1 | release-notes |
| https://github.com/horde/imp/pull/85 | issue-tracking |
| https://github.com/horde/imp/commit/fba972fab72ee… | patch |
| https://www.horde.org/apps/imp | product |
| https://www.vulncheck.com/advisories/horde-imp-pa… | third-party-advisory |
| https://blog.evan.lat/posts/CVE-2026-58451/ | technical-descriptionexploit |
| http://seclists.org/fulldisclosure/2026/Jul/8 |
Impacted products
Date Public
2026-07-01 00:00
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.