HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the other modifies the encoder's table size when handling a SETTINGS frame containing SETTINGS_HEADER_TABLE_SIZE that a client sends. A malicious client can repeatedly send a request while changing the header table size to crash the server.
CVE-2026-97032
UNRATEDCVSS · not yet scoredTrending — 4 sources updated this week
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- —
- EchelonGraph score
- Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
- EG Score
- —
- EG Risk
- —
- EPSS PROB
- 0.2%
- EPSS %ILE
- 7th
- KEV
- Not listed
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
October 8, 2026
Last Modified
October 9, 2026
References (6)
- security@golanghttps://go.dev/cl/847188
- security@golanghttps://go.dev/cl/847313
- security@golanghttps://go.dev/issue/81867
- security@golanghttps://groups.google.com/g/golang-announce/c/U2fTuyDJznI
- security@golanghttps://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs
- security@golanghttps://pkg.go.dev/vuln/GO-2026-6617
Vendor Advisories for CVE-2026-97032(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(10 across 4 ecosystems)
Debian:14(4)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| golang-1.25 | 1.25.0-1 ... 1.25.9-1 (20 versions) |
| — |
| golang-1.26 | 1.26.0-1 ... 1.26~rc3-2 (24 versions) |
| — |
| golang-1.27 | 1.27.0-1 ... 1.27~rc3-1 (9 versions) |
| — |
| golang-golang-x-net | 1:0.27.0-2 ... 1:0.60.0-1 (11 versions) |
| — |
Debian:12(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| golang-1.19 | 1.19.10-1 ... 1.19.9-1 (12 versions) |
| — |
| golang-golang-x-net | 1:0.10.0-1 ... 1:0.7.0+dfsg-1 (28 versions) |
| — |
Debian:13(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| golang-1.24 | 1.24.12-1 ... 1.24.9-1 (10 versions) |
| — |
| golang-golang-x-net | 1:0.27.0-2 ... 1:0.60.0-1 (11 versions) |
| — |
Go(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| golang.org/x/net | — |
| — |
| stdlib | — |
| — |
Data Freshness Timeline
(refreshed 12× in last 7d / 12× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-12 14:40 UTCEG score recompute
- 2026-10-11 19:11 UTCEG score recompute
- 2026-10-11 16:26 UTCEG score recompute
- 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-11 13:38 UTCEG score recompute
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-08 23:20 UTCNVD update
- 2026-10-08 22:58 UTCEG score recompute
- 2026-10-08 22:58 UTCMITRE cvelistV5first tracked
Related CVEs(same product)
Same product
10 shownDebian:14:golang-1.27 · Debian:12:golang-golang-x-net
Frequently asked(4)
What is CVE-2026-97032?
CVE-2026-97032 is a vulnerability whose severity is not yet rated; its CVE record was published on October 8, 2026. HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the…
When was the CVE record for CVE-2026-97032 published?
The CVE record for CVE-2026-97032 was published on October 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 9, 2026; the record at its source may have been updated since.
Is CVE-2026-97032 actively exploited?
CVE-2026-97032 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-97032?
A fix for CVE-2026-97032 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-97032 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-97032
Is Your Infrastructure Affected by CVE-2026-97032?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.