CVE-2026-11443

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreHIGH confidence

Score 4.6 from GitHub Security Advisory published 2026-06-13. a secondary CVSS source baseline 4.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.6Exploit: NoneExposed: 0

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

Allegra downloadAttachment Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to execute arbitrary script on affected installations of Allegra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the downloadAttachment method. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of arbitrary script. An attacker can leverage this vulnerability to execute script in the context of the current user. Was ZDI-CAN-28236.

CVSS v3
4.6
EG Score
4.6(high)
EPSS
13.1%
KEV
Not listed

Published

June 13, 2026

Last Modified

June 15, 2026

Advisory Details (2)

Auto-updated Jun 17, 2026
No patch confirmed yet.
generic

ZDI-26-358 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-358/
generic

Release Notes for Allegra 9.0

https://alltena.com/en/resources/release-notes/release-notes-for-release-9-0-0/

Vendor Advisories for CVE-2026-11443(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 22× in last 7d / 78× 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. 2026-07-07 00:48 UTCEG score recompute
  2. 2026-07-07 00:48 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 19:43 UTCEG score recompute
  6. 2026-07-05 19:43 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 19:04 UTCEG score recompute
  10. 2026-07-04 19:04 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 16:51 UTCEG score recompute
  13. 2026-07-03 16:51 UTCGHSA enrichment
  14. 2026-07-02 16:14 UTCEG score recompute
  15. 2026-07-02 16:14 UTCGHSA enrichment
  16. 2026-07-01 15:35 UTCEG score recompute
  17. 2026-07-01 15:35 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 14:57 UTCEG score recompute
  22. 2026-06-30 14:57 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 13:58 UTCEG score recompute
  25. 2026-06-29 13:58 UTCGHSA enrichment
Show 53 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 13:20 UTCEG score recompute
  3. 2026-06-28 13:20 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 12:41 UTCEG score recompute
  7. 2026-06-27 12:41 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 12:02 UTCEG score recompute
  10. 2026-06-26 12:02 UTCGHSA enrichment
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-25 09:23 UTCEG score recompute
  13. 2026-06-25 09:23 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-24 08:45 UTCEG score recompute
  16. 2026-06-24 08:45 UTCGHSA enrichment
  17. 2026-06-23 21:32 UTCEPSS rescore
  18. 2026-06-23 08:07 UTCEG score recompute
  19. 2026-06-23 08:07 UTCGHSA enrichment
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-22 07:27 UTCEG score recompute
  23. 2026-06-22 07:27 UTCGHSA enrichment
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 06:37 UTCEG score recompute
  27. 2026-06-21 06:37 UTCGHSA enrichment
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-21 01:59 UTCEPSS rescore
  30. 2026-06-20 05:57 UTCEG score recompute
  31. 2026-06-20 05:57 UTCGHSA enrichment
  32. 2026-06-19 19:25 UTCEPSS rescore
  33. 2026-06-19 04:47 UTCEG score recompute
  34. 2026-06-19 04:46 UTCGHSA enrichment
  35. 2026-06-18 17:52 UTCEPSS rescore
  36. 2026-06-18 03:59 UTCEG score recompute
  37. 2026-06-18 03:59 UTCGHSA enrichment
  38. 2026-06-17 17:53 UTCEPSS rescore
  39. 2026-06-17 03:21 UTCEG score recompute
  40. 2026-06-17 03:21 UTCGHSA enrichment
  41. 2026-06-16 17:52 UTCEPSS rescore
  42. 2026-06-16 02:43 UTCEG score recompute
  43. 2026-06-16 02:42 UTCGHSA enrichment
  44. 2026-06-15 17:48 UTCEPSS rescore
  45. 2026-06-15 02:04 UTCEG score recompute
  46. 2026-06-15 02:04 UTCGHSA enrichment
  47. 2026-06-14 23:18 UTCEPSS rescore
  48. 2026-06-14 01:26 UTCEG score recompute
  49. 2026-06-14 01:25 UTCGHSA enrichment
  50. 2026-06-13 23:00 UTCEPSS rescore
  51. 2026-06-13 23:00 UTCEPSS rescore
  52. 2026-06-13 00:47 UTCEG score recompute
  53. 2026-06-13 00:47 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11443?
CVE-2026-11443 is a medium vulnerability published on June 13, 2026. Allegra downloadAttachment Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to execute arbitrary script on affected installations of Allegra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page…
When was CVE-2026-11443 disclosed?
CVE-2026-11443 was first published in the National Vulnerability Database on June 13, 2026, with the most recent update on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11443 actively exploited?
CVE-2026-11443 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11443?
CVE-2026-11443 has a CVSS v3 base score of 4.6 (NVD).
How do I remediate CVE-2026-11443?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11443, 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

Explore the affected products and dependency analysis for CVE-2026-11443

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