No exploitation reportedFix available

CVE-2022-43686

Q: Is CVE-2022-43686 actively exploited?

Active exploitation of CVE-2022-43686 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-43686?

CVE-2022-43686 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2022-11-14
Fixed in9.1.3 · 8.5.10
WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2, the authTypeConcreteCookieMap table can be filled up causing a denial of service (high load).

Timeline

dates in UTC

2022-11-1422:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-43686?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-43686?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

Concretecms concrete cms

Branch	Affected	Fixed in	Source
9.x	≥ 9.0.0, < 9.1.3	9.1.3	OSV
8.5	< 8.5.10	8.5.10	NVD · OSV
9.x	≥ 9.0.0, ≤ 9.1.2	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Concretecms concrete cms to 9.1.3 · 8.5.10

Advisories and patches

documentation.concretecms.orgRelease Notes · Vendor Advisory
documentation.concretecms.orgRelease Notes · Vendor Advisory
github.comPatch · Release Notes
github.comPatch · Release Notes
www.concretecms.orgVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-30
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.16.52025-04-30
NVDCVSS 3.16.5read 2026-10-23
CISA-ADPweakness (CWE)CWE-7702025-04-30
NVDweakness (CWE)CWE-770read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: 2022-11-14
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-43686?

In Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2, the authTypeConcreteCookieMap table can be filled up causing a denial of service (high load).

Is CVE-2022-43686 actively exploited?

Active exploitation of CVE-2022-43686 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-43686?

CVE-2022-43686 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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