CVE-2026-33691

highpriority · track · 31EPSS 0.016 · 75 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.58% (75th) EPSS

CVSS 7.5 · high

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-22

The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 3.3.9 and 4.25.0, a bypass was identified in OWASP CRS that allows uploading files with dangerous extensions (.php, .phar, .jsp, .jspx) by inserting whitespace padding in the filename (e.g. photo. php or shell.jsp ). The affected rules do not normalize whitespace before evaluating the file extension regex, so the dot-extension check fails to match. This issue has been patched in versions 3.3.9 and 4.25.0.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · ENISA EU

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · security-advisories@github.comexploitability 2.2 · impact 4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-178US

affected products (7)

Products and version ranges known to be affected.

SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Kemp LoadMaster≤ GA <7.2.63.2cert_bundDE
Kemp LoadMaster≤ LTSF <7.2.54.18cert_bundDE
coreruleset coreruleset≤ < 3.3.9enisa_euvdEU
coreruleset coreruleset4.0.0-rc1, → 4.25.0enisa_euvdEU
owasp owasp modsecurity core rule set< 3.3.9nvdUScpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*
owasp owasp modsecurity core rule set4.0.0 → 4.25.0nvdUScpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1812Kemp LoadMaster: Mehrere SchwachstellenDeutsch2026-06-07csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Kemp LoadMaster ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren oder beliebigen Code auszuführen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-04-02modified 2026-07-24

references (26)

External citations — patches, advisories, analysis.

scry

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