CVE-2026-126405: Coder from 2.38.0 before 2.38.4 Memory Exhaustion DoS via Web Push
Vendor fix available · Affected: coder · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 23% of scored CVEs
DescriptionCVE.org
Coder 2.21.0 before 2.29.24, 2.30.0 before 2.34.16, 2.35.0 before 2.36.11, 2.37.0 before 2.37.8, and 2.38.0 before 2.38.4 reads Web Push endpoint responses in webpushSend with io.ReadAll, without a size limit or client timeout. Any authenticated user can register a subscription via POST /api/v2/users/{user}/webpush/subscription pointing to a server returning an endless body, exhausting coderd memory and crashing the API, dashboard, and workspace connections.
Affected products6
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- coder · coderfrom 2.38.0 before 2.38.4
- coder · coderfrom 2.37.0 before 2.37.8
- coder · coderfrom 2.36.0 before 2.36.11
- coder · coderfrom 2.30.0 before 2.34.16
- coder · coderfrom 2.21.0 before 2.29.24
- coder · coderfrom 2.35.0 before 2.36.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- coder
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-126405 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.