CVE-2026-102333: cle-b httpdbg

httpdbg before 2.2.1 Stored Cross-Site Scripting via javascript URL

CVSS 5.3 MediumEPSS 0.0026 · 17th percentile

Published by the CVE Program (CNA: VulnCheck) at 28 Sept 2026, 22:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
cle-b	httpdbg pkg:pypi/httpdbg	affected before 2.2.1 semver Other versions: unaffected

Identifiers

CVE-2026-102333

CNA

VulnCheck

Weakness (CWE)

CWE-79

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
5.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	CNA (VulnCheck)Used for this record
6.1	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0026, the 17th percentile, on 14 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 28 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/cle-b/httpdbg/issues/220 issue-tracking
github.com/cle-b/httpdbg/pull/222 patchissue-tracking
github.com/cle-b/httpdbg/commit/121845b41c19ddaf30b51be0797bc2ff4847d8b3 patch
github.com/cle-b/httpdbg/releases/tag/v2.2.1 release-notes
github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/webapp/static/index.htm#L302 technical-description
github.com/cle-b/httpdbg/blob/v2.2.0/httpdbg/hooks/recordhttp2.py#L88-L97 technical-description
github.com/cle-b/httpdbg product
www.vulncheck.com/advisories/httpdbg-before-2.2.1-stored-cross-site-scripting-via-javascript-url third-party-advisory

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.