CVE-2026-71802

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-09-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

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

A stored Cross-Site Scripting (XSS) vulnerability exists in the announcement preview component of REBUILD 4.4.3. Although the announcement content undergoes HTML escaping on the server side, the client-side preview code reverses the escaped entities using jQuery's html().text() method and subsequently injects the result into the DOM. An administrator or attacker capable of controlling the announcement content can exploit this vulnerability to execute arbitrary JavaScript code in the browsers of users viewing the affected pages "which may include the dashboard, activity feed, or login page, depending on the announcement's visibility settings.

CVSS v3
5.4
EG Score
5.4MEDIUMhigh confidence
EG Risk
24
EG Risk 24/100CISA SSVC

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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 9, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Reverse decryption of voting entities in the announcement area leads to stored XSS. · Issue #6 · W000i/vuln · GitHub

https://github.com/W000i/vuln/issues/6

Vendor Advisories for CVE-2026-71802(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 18× in last 7d / 62× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 20:32 UTCGHSA enrichment
  3. 2026-10-03 19:11 UTCEG score recompute
  4. 2026-10-03 19:11 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 17:43 UTCEG score recompute
  7. 2026-10-02 17:42 UTCGHSA enrichment
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-10-01 16:21 UTCEG score recompute
  10. 2026-10-01 16:21 UTCGHSA enrichment
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-30 15:00 UTCEG score recompute
  13. 2026-09-30 15:00 UTCGHSA enrichment
  14. 2026-09-29 12:42 UTCEG score recompute
  15. 2026-09-29 12:42 UTCGHSA enrichment
  16. 2026-09-28 13:52 UTCEPSS rescore
  17. 2026-09-28 11:21 UTCEG score recompute
  18. 2026-09-28 11:21 UTCGHSA enrichment
  19. 2026-09-27 13:48 UTCEPSS rescore
  20. 2026-09-27 09:59 UTCEG score recompute
  21. 2026-09-27 09:59 UTCGHSA enrichment
  22. 2026-09-26 15:59 UTCEPSS rescore
  23. 2026-09-26 08:38 UTCEG score recompute
  24. 2026-09-26 08:38 UTCGHSA enrichment
  25. 2026-09-25 07:00 UTCEG score recompute
Show 37 more
  1. 2026-09-25 07:00 UTCGHSA enrichment
  2. 2026-09-24 05:39 UTCEG score recompute
  3. 2026-09-24 05:39 UTCGHSA enrichment
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 04:18 UTCEG score recompute
  6. 2026-09-23 04:18 UTCGHSA enrichment
  7. 2026-09-22 02:57 UTCEG score recompute
  8. 2026-09-22 02:57 UTCGHSA enrichment
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 01:35 UTCEG score recompute
  11. 2026-09-21 01:35 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 00:14 UTCEG score recompute
  14. 2026-09-20 00:14 UTCGHSA enrichment
  15. 2026-09-18 22:52 UTCEG score recompute
  16. 2026-09-18 22:52 UTCGHSA enrichment
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-17 21:31 UTCEG score recompute
  19. 2026-09-17 21:31 UTCGHSA enrichment
  20. 2026-09-16 20:10 UTCEG score recompute
  21. 2026-09-16 20:10 UTCGHSA enrichment
  22. 2026-09-16 14:08 UTCEPSS rescore
  23. 2026-09-16 05:15 UTCEPSS rescore
  24. 2026-09-15 18:49 UTCEG score recompute
  25. 2026-09-15 18:49 UTCGHSA enrichment
  26. 2026-09-15 03:12 UTCEPSS rescore
  27. 2026-09-14 17:28 UTCGHSA enrichment
  28. 2026-09-14 17:05 UTCEG score recompute▲ 5.40
  29. 2026-09-14 17:05 UTCGHSA enrichment
  30. 2026-09-14 17:04 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  31. 2026-09-13 21:53 UTCEG score recompute
  32. 2026-09-13 21:53 UTCGHSA enrichment
  33. 2026-09-11 14:53 UTCEPSS rescore
  34. 2026-09-10 15:58 UTCGHSA enrichment
  35. 2026-09-09 21:30 UTCNVD update
  36. 2026-09-09 20:45 UTCEG score recompute
  37. 2026-09-09 20:44 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-71802?
CVE-2026-71802 is a medium vulnerability published on September 9, 2026. A stored Cross-Site Scripting (XSS) vulnerability exists in the announcement preview component of REBUILD 4.4.3. Although the announcement content undergoes HTML escaping on the server side, the client-side preview code reverses the escaped entities using jQuery's html().text() method and…
When was CVE-2026-71802 disclosed?
CVE-2026-71802 was first published on September 9, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71802 actively exploited?
CVE-2026-71802 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71802?
CVE-2026-71802 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-71802?
No fix for CVE-2026-71802 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-71802 are linked in the Vendor Advisories panel on this page.

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