CVE-2026-93453

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid password-reset tokens mailed to victim recovery addresses within links pointing to attacker infrastructure, enabling account takeover.

CVSS v3
8.3
EG Score
8.3(high)
EG Risk
53(Track)
EG Risk 53/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity83% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
Patch available. Sources: github_commit.
generic

SOGo before 5.12.11 Password Reset Token Interception via Origin Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sogo-before-5.12.11-password-reset-token-interception-via-origin-header
generic

GitHub - Alinto/sogo: SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices. · GitHub

https://github.com/Alinto/sogo
generic

sogo/UI/MainUI/SOGoRootPage.m at SOGo-5.12.10 · Alinto/sogo · GitHub

https://github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m#L1375
github_commit Patch Available

commit 04a3e9823889 (Alinto/sogo)

Patch available: Alinto/sogo SOGo-5.12.11 (contains commit 04a3e9823889)

https://github.com/Alinto/sogo/commit/04a3e9823889acaf6c247b224f5f7a0108f8f829
github_commit Patch Available

commit 382118a93b69 (Alinto/sogo)

Patch available: Alinto/sogo SOGo-5.12.11 (contains commit 382118a93b69)

https://github.com/Alinto/sogo/commit/382118a93b6925de2ce7f774abc1865ebea2dbba
generic

SOGo v5.12.11 released

https://www.sogo.nu/news/2026/sogo-v51211-released.html

Vendor Advisories for CVE-2026-93453(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 07:34 UTCEG score recompute
  2. 2026-09-19 07:34 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 18:26 UTCEG score recompute
  5. 2026-09-18 18:26 UTCGHSA enrichment
  6. 2026-09-18 18:15 UTCEG score recompute
  7. 2026-09-18 18:15 UTCGHSA enrichment
  8. 2026-09-18 13:36 UTCEG score recompute
  9. 2026-09-18 13:36 UTCGHSA enrichment
  10. 2026-09-18 00:28 UTCEG score recompute
  11. 2026-09-17 23:34 UTCEG score recompute
  12. 2026-09-17 23:34 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCFaceless0x7/CVE-2026-93453
    First seen Sep 18, 2026

    CVE-2026-93453 Exploit — SOGo password reset link poisoning via attacker-controlled Origin header, enabling password reset token interception and account takeover.

    Open source ↗

Frequently asked(5)

What is CVE-2026-93453?
CVE-2026-93453 is a high vulnerability published on September 17, 2026. SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid…
When was CVE-2026-93453 disclosed?
CVE-2026-93453 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93453 actively exploited?
CVE-2026-93453 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 72.0% of all scored CVEs.
What is the CVSS score of CVE-2026-93453?
CVE-2026-93453 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-93453?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93453, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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