5.4

CVE-2026-55432: coder Missing Authorization

CVSS: 5.4v3.1MediumAnalyzed
AliasesGHSA-x9qq-2qh5-8rxfGO-2026-5926
Published 08-07-2026Last modified 08-07-2026
Open JSON

Vulnerability summary

CVE-2026-55432 is a medium (CVSS 5.4) Missing Authorization vulnerability in coder. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 22.9% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:21483-1

Timeline

  1. 08-07-2026
    PublishedVulnerability first disclosed.
  2. 08-07-2026
    Last modifiedVulnerability information updated.

Description

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the `CreateSubAgent` RPC did not validate a requested app sharing level against the template's `MaxPortSharingLevel` before persisting workspace apps, letting a workspace owner exceed the administrator's configured maximum. Exploitation requires the ability to register sub-agent apps in a workspace the attacker controls. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2clamps the sub-agent app sharing level to the template's `MaxPortSharingLevel`. As a workaround, disable wildcard app hostnames (`CODER_WILDCARD_ACCESS_URL`) to block subdomain-based app routing.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

0.00 pp

From 0.32% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Coder1 product
  • coder< 2.29.17 | ≥ 2.30.0, < 2.32.7 | ≥ 2.33.0, < 2.33.8 | ≥ 2.34.0, < 2.34.2
Github.com/coder1 product
  • coderAll versions (No fix recorded)
Github.com/coder/coder1 product
  • v2≥ 2.33.0, < 2.33.8 | ≥ 2.30.0, < 2.32.7 | < 2.29.17 | ≥ 2.34.0, < 2.34.2

3 vendors · 3 products

References

7 links