CVE-2023-26775Monitorr Unrestricted File Upload
File Upload vulnerability found in Monitorr v.1.7.6 allows a remote attacker t oexecute arbitrary code via a crafted file upload to the assets/php/upload.php endpoint.
Published Apr 4, 2023 · Updated Oct 20, 2026
Key Facts
Patch immediately- CVE-2023-26775 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting Monitorr.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Feb 10, 2024. No public exploit code is known.
- EPSS estimates a 49% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
49%
Higher than 98.8% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
56/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Feb 10, 2024
312 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
10
Reports of active use
Advisories And Exploit References
Description
File Upload vulnerability found in Monitorr v.1.7.6 allows a remote attacker t oexecute arbitrary code via a crafted file upload to the assets/php/upload.php endpoint.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Feb 10, 2024 | n/a | Not reported |
| Industry KEV feed | Feb 10, 2024 | n/a | Not reported |
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| MonitorrMonitorr | 1.7.6m | n/a |
Timeline
Publicly disclosed
Apr 4, 2023
Added to CIRCL KEV
Feb 10, 2024
Added to Industry KEV feed
Feb 10, 2024
Last updated
Oct 20, 2026
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- advisorycve.org · CVERecord
- advisorynvd.nist.gov · CVE-2023-26775
- advisorytwitter.com · retrymp3
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
File Upload vulnerability found in Monitorr v.1.7.6 allows a remote attacker t oexecute arbitrary code via a crafted file upload to the assets/php/upload.php endpoint.
Affected: Monitorr versions 1.7.6m. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Feb 10, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2023-26775 On Your Attack Surface?
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