CVE-2026-82677: valkey-io valkey

Affected products, as the CNA wrote them
Vendor	Product	Versions
valkey-io	valkey	affected 9.1.0

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.8	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	CNA (VulDB)Used for this record
2.4	Low	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	CNA (VulDB)
2.4	Low	3.0	CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	CNA (VulDB)
3.3	Low	2.0	AV:N/AC:L/Au:M/C:N/I:N/A:P/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0029, the 21st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 31 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/397172 vdb-entrytechnical-description
vuldb.com/vuln/397172/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-82677 third-party-advisory
vuldb.com/submit/893959 third-party-advisory
github.com/valkey-io/valkey/issues/4200 issue-tracking
github.com/valkey-io/valkey/pull/4211 issue-trackingpatch
github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7 patch
github.com/valkey-io/valkey/ product
github.com/user-attachments/files/30118801/PoC.zip exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.