CVE-2026-8841

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreHIGH confidence

Score 6.4 from GitHub Security Advisory published 2026-06-09. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0

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

The Extra Settings for RocketChat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rocketchat' shortcode's 'title' attribute in versions up to, and including, 0.1. This is due to insufficient input sanitization and output escaping in the rxstg_shortcode() function, which concatenates the user-supplied 'title' attribute directly into HTML output. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS v3
6.4
EG Score
6.4(high)
EPSS
7.9%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 9, 2026

References (3)

Vendor Advisories for CVE-2026-8841(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 21× in last 7d / 86× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 22:16 UTCEG score recompute
  6. 2026-07-05 22:16 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 21:50 UTCEG score recompute
  10. 2026-07-04 21:50 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 20:52 UTCEG score recompute
  14. 2026-07-03 20:52 UTCGHSA enrichment
  15. 2026-07-02 20:24 UTCEG score recompute
  16. 2026-07-02 20:24 UTCGHSA enrichment
  17. 2026-07-01 19:58 UTCEG score recompute
  18. 2026-07-01 19:58 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 19:36 UTCEG score recompute
  21. 2026-06-30 19:35 UTCGHSA enrichment
  22. 2026-06-29 19:13 UTCEG score recompute
  23. 2026-06-29 19:13 UTCGHSA enrichment
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-28 17:33 UTCEG score recompute
Show 61 more
  1. 2026-06-28 17:32 UTCGHSA enrichment
  2. 2026-06-28 14:07 UTCEPSS rescore
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 17:08 UTCEG score recompute
  5. 2026-06-27 17:08 UTCGHSA enrichment
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-26 16:45 UTCEG score recompute
  8. 2026-06-26 16:45 UTCGHSA enrichment
  9. 2026-06-25 16:22 UTCEG score recompute
  10. 2026-06-25 16:22 UTCGHSA enrichment
  11. 2026-06-25 13:50 UTCEPSS rescore
  12. 2026-06-24 15:59 UTCEG score recompute
  13. 2026-06-24 15:59 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-23 15:35 UTCEG score recompute
  17. 2026-06-23 15:35 UTCGHSA enrichment
  18. 2026-06-22 14:25 UTCEPSS rescore
  19. 2026-06-22 13:40 UTCEG score recompute
  20. 2026-06-22 13:40 UTCGHSA enrichment
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 10:59 UTCEG score recompute
  23. 2026-06-21 10:59 UTCGHSA enrichment
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-20 10:35 UTCEG score recompute
  26. 2026-06-20 10:34 UTCGHSA enrichment
  27. 2026-06-19 19:26 UTCEPSS rescore
  28. 2026-06-19 10:05 UTCEG score recompute
  29. 2026-06-19 10:05 UTCGHSA enrichment
  30. 2026-06-18 17:52 UTCEPSS rescore
  31. 2026-06-18 09:41 UTCEG score recompute
  32. 2026-06-18 09:41 UTCGHSA enrichment
  33. 2026-06-17 17:53 UTCEPSS rescore
  34. 2026-06-17 07:51 UTCEG score recompute
  35. 2026-06-17 07:51 UTCGHSA enrichment
  36. 2026-06-16 17:53 UTCEPSS rescore
  37. 2026-06-16 07:28 UTCEG score recompute
  38. 2026-06-16 07:28 UTCGHSA enrichment
  39. 2026-06-15 17:49 UTCEPSS rescore
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-15 07:04 UTCEG score recompute
  42. 2026-06-15 07:04 UTCGHSA enrichment
  43. 2026-06-14 23:18 UTCEPSS rescore
  44. 2026-06-14 06:41 UTCEG score recompute
  45. 2026-06-14 06:41 UTCGHSA enrichment
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-13 06:19 UTCEG score recompute
  48. 2026-06-13 06:19 UTCGHSA enrichment
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 05:56 UTCEG score recompute
  52. 2026-06-12 05:56 UTCGHSA enrichment
  53. 2026-06-11 14:00 UTCEPSS rescore
  54. 2026-06-11 05:33 UTCEG score recompute
  55. 2026-06-11 05:33 UTCGHSA enrichment
  56. 2026-06-10 22:19 UTCEPSS rescore
  57. 2026-06-10 13:22 UTCEPSS rescore
  58. 2026-06-10 05:10 UTCEG score recompute
  59. 2026-06-10 05:10 UTCGHSA enrichment
  60. 2026-06-09 04:48 UTCEG score recompute
  61. 2026-06-09 04:45 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8841?
CVE-2026-8841 is a medium vulnerability published on June 9, 2026. The Extra Settings for RocketChat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rocketchat' shortcode's 'title' attribute in versions up to, and including, 0.1. This is due to insufficient input sanitization and output escaping in the rxstg_shortcode() function, which…
When was CVE-2026-8841 disclosed?
CVE-2026-8841 was first published in the National Vulnerability Database on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8841 actively exploited?
CVE-2026-8841 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8841?
CVE-2026-8841 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-8841?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8841, 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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