Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The golang.org/x/net module before 0.53.0 and the Go standard library (versions before 1.25.10, and 1.26.0 up to 1.26.3) are affected. An HTTP/2 transport that receives a SETTINGS frame with SETTINGS_MAX_FRAME_SIZE set to 0 can enter an infinite loop while writing CONTINUATION frames. The source gives few details about how a remote peer would trigger this. Upgrade golang.org/x/net to 0.53.0 or later, and upgrade Go to 1.25.10 or 1.26.3.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | ADP (CISA-ADP) |
- CISA KEV Not listed.
- EPSS 0.0084, the 58th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:12 UTC First seen by agentprime
- 31 Oct 2026, 14:12 UTC Confirmed by OSV