Public proof of concept

CVE-2026-4802

A public proof of concept exists; no exploitation attested.

Published2026-05-11
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

A flaw was found in Cockpit. This vulnerability allows a remote attacker to achieve arbitrary command execution on the host by exploiting unsanitized user-controlled parameters within crafted links in the system logs user interface (UI). An attacker can inject shell metacharacters and command substitutions into these parameters, leading to the execution of arbitrary shell commands on the affected system. This could result in a complete system compromise.

Timeline

dates in UTC

2026-05-1114:16CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-4802?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-4802?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

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

cockpitAlmaLinux:10all versions · fixed in 356.2-1.el10_2and 7 other packages
cockpitAlmaLinux:9all versions · fixed in 356.2-1.el9_8and 7 other packages
cockpitAlmaLinux:8all versions · fixed in 310.8-1.el8_10and 4 other packages

Full record on NVD

Fix

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

Detection

read 2026-10-23 19:25 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedhakaioffsec/CVE-2026-4802

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-05-11
OpenCVESSVC decisionnone—
CNACVSS 3.18read 2026-10-23
CNAweakness (CWE)CWE-78read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Published: 2026-05-11
Last Modified: 2026-07-15
NVD status: Awaiting Analysis

Frequently asked questions

What is CVE-2026-4802?

Is CVE-2026-4802 actively exploited?

Active exploitation of CVE-2026-4802 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-4802?

CVE-2026-4802 has a CVSS v3 base score of 8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

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