Directadmin: Use of HTTP Request With Sensitive Query String
CVE-2025-56551 is a high-severity use of HTTP request with sensitive query string vulnerability in Directadmin, with a CVSS 3.1 base score of 8.2 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Directadmin versions: 1.680. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.36% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Directadmin you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Directadmin | Directadmin | 1.680 | Not stated |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- LowSome restricted data can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N. Scored by CISA (ADP).
Official description
An issue in DirectAdmin v1.680 allows unauthorized attackers to manipulate the page layout and replace the legitimate login interface with arbitrary attacker-controlled content via supplying a crafted GET request.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of HTTP Request With Sensitive Query String
The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.
How developers prevent this class of flaw
- When sending sensitive information, only include it in the request body or request headers instead of the query string. This may require avoiding use of GET requests.
More Use of HTTP Request With Sensitive Query String vulnerabilities (CWE-598)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- cxsecurity.com/issue/WLB-2025100001Exploit, Third Party Advisory
Other references
- i.imgur.com/4HF0cnP.pngProduct
- i.imgur.com/qA6SAXO.pngProduct
Recent Use of HTTP Request With Sensitive Query String vulnerabilities
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