# CVE-2026-119407: Element Web and Element Desktop before 1.12.32 Forced Logout via Guest Credential URL Parameters

Status: published. Published: 2026-10-30. Updated: 2026-11-04.

Element Web and Element Desktop before 1.12.32 accept guest credentials from URL fragment parameters in loadSession, allowing remote unauthenticated attackers to log out users and clear local stores. Attackers can lure logged-in users into opening links with guest_user_id and guest_access_token to force an attacker-controlled guest session and destroy unbacked end-to-end encryption keys.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/element-hq/element-web/commit/792453c88a399d570599f5d73b08b40157cd80c0

## Affected products and versions

- element-hq / element-web: ≥ 0; < 1.12.32 (affected, semver); 1.12.32 (unaffected, semver). Source: CNA: VulnCheck
- element-hq / element-desktop: ≥ 0; < 1.12.32 (affected, semver); 1.12.32 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 7.1 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H; source: CNA: VulnCheck

- CVSS 4.0: 7.1 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.14% as of 2026-11-04; percentile 3.58%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-352

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/element-hq/element-web/security/advisories/GHSA-c88w-7h6p-27xr (CNA: VulnCheck; vendor-advisory)

- https://github.com/element-hq/element-web/commit/792453c88a399d570599f5d73b08b40157cd80c0 (CNA: VulnCheck; patch)

- https://github.com/element-hq/element-web/blob/v1.12.31/apps/web/src/Lifecycle.ts#L188 (CNA: VulnCheck; technical-description)

- https://github.com/element-hq/element-web/releases/tag/v1.12.32 (CNA: VulnCheck; release-notes)

- https://abraxaslabs.tech/research/element-fragment-guest (CNA: VulnCheck; third-party-advisory)

- https://github.com/element-hq/element-web (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/element-web-and-element-desktop-before-1.12.32-forced-logout-via-guest-credential-url-parameters (CNA: VulnCheck; third-party-advisory)

- https://abraxaslabs.tech/research/element-fragment-guest (disclosure@vulncheck.com)

- https://github.com/element-hq/element-web (disclosure@vulncheck.com)

- https://github.com/element-hq/element-web/blob/v1.12.31/apps/web/src/Lifecycle.ts#L188 (disclosure@vulncheck.com)

- https://github.com/element-hq/element-web/commit/792453c88a399d570599f5d73b08b40157cd80c0 (disclosure@vulncheck.com)

- https://github.com/element-hq/element-web/releases/tag/v1.12.32 (disclosure@vulncheck.com)

- https://github.com/element-hq/element-web/security/advisories/GHSA-c88w-7h6p-27xr (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/element-web-and-element-desktop-before-1.12.32-forced-logout-via-guest-credential-url-parameters (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-119407; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119407; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119407; retrieved 2026-11-05; source updated Not reported

Revision: 22b0768ee047e0d89c854fe4d407f313c0026b24b261f34ae5d5a25d10e0c7eb

Canonical: https://y2.dev/cve/CVE-2026-119407

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