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No exploitation reported

CVE-2026-38822

OS Command Injection via HTTP GET Parameter Name in openNDS Client Status Page

No exploitation reported by the sources we read.

  • Published2026-08-28
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In openNDS before 11.0.0, the client_params.sh script, invoked by the openNDS daemon to serve the authenticated client status page, is vulnerable to OS command injection through crafted HTTP GET query parameter keys. An authenticated captive portal user can inject arbitrary shell commands by embedding semicolons in a URL query parameter name.

Timeline

dates in UTC
  1. 2026-08-2802:16CVE publishedNVD

Versions per branch

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • openNDSother versions: not affected
    Affected
    • < 11.0.0fixed in 11.0.0semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-28

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • openndsUbuntu:Pro:24.04:LTSall versions · no fixed version listed
  • openndsUbuntu:26.10all versions · no fixed version listed
  • openndsUbuntu:26.04:LTSall versions · no fixed version listed
  • openndsDebian:13all versions · no fixed version listed
  • openndsDebian:12all versions · no fixed version listed

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Published
2026-08-28
Last Modified
2026-09-09
NVD status
Deferred
GitHub Advisory
GHSA-2h6c-w4mg-27v5

Frequently asked questions

What is CVE-2026-38822?

In openNDS before 11.0.0, the client_params.sh script, invoked by the openNDS daemon to serve the authenticated client status page, is vulnerable to OS command injection through crafted HTTP GET query parameter keys. An authenticated captive portal user can inject arbitrary shell commands by embedding semicolons in a URL query parameter name.

Is CVE-2026-38822 actively exploited?

Active exploitation of CVE-2026-38822 has not been confirmed. Its EPSS score was 2.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-38822?

CVE-2026-38822 has a CVSS v3 base score of 7.6 (HIGH severity), with vector string CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

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