CVE-2026-44956

UNRATEDCVSS · not yet scored

Also known asEUVD-2026-38508 (ENISA EUVD) · GHSA-55h8-q58m-2332 (GitHub Security Advisories)Source: ENISA EUVD

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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS v2: —Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (HackerOne) lists Revive Adserver versions up to and including 6.0.6 as affected. No release containing a fix is confirmed on record.

Low‑privileged users could use their Full Name as a vector for a stored XSS attack. The name is included in system‑generated emails, whose content is stored in the details field of the userlog table. An admin user viewing the email content through userlog-details.php would have any malicious JavaScript payload executed due to missing output sanitisation. Proper escaping has been added to the userlog details output.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.4%
EPSS %ILE
32nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
No SSVC decision: EchelonGraph has not assessed this CVECISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the BOD 26-04 block below.

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 23, 2026

Last Modified

October 26, 2026

References (1)

Vendor Advisories for CVE-2026-44956(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 9× in last 7d / 36× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 147 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 47 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  3. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  4. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  5. 2026-10-26 11:31 UTCEG score recompute
  6. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-10-25 14:27 UTCEG score recompute
  8. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  11. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  13. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-10-18 03:38 UTCEG score recompute
  16. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-10-12 16:04 UTCEG score recompute
  23. 2026-10-11 19:47 UTCEG score recompute
  24. 2026-10-11 17:01 UTCEG score recompute
  25. 2026-10-11 14:26 UTCEG score recompute
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  1. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  5. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  7. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  8. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  15. 2026-09-23 12:01 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  16. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  17. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  18. 2026-09-18 10:28 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  19. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-09-13 12:22 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  24. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  27. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  29. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  30. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  31. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  33. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  34. 2026-08-30 20:26 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  35. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  36. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  37. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  38. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  39. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  40. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  41. 2026-08-23 08:33 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  42. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  43. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  44. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  45. 2026-08-20 07:46 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  46. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  47. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  48. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  49. 2026-08-16 21:30 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  51. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  52. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  53. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  54. 2026-08-13 20:45 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  55. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  56. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  57. 2026-08-10 19:58 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  58. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  60. 2026-08-07 19:14 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  61. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  62. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  63. 2026-08-04 18:30 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  64. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  65. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  67. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  68. 2026-08-01 17:22 UTCEG score recompute
  69. 2026-08-01 17:22 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  70. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  71. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  72. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  73. 2026-07-29 16:37 UTCGHSA enrichmentGHSA-55h8-q58m-2332 · GitHub severity LOW
  74. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  75. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.3% · 26th percentile

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-44956?
CVE-2026-44956 is a vulnerability whose severity is not yet rated; its CVE record was published on June 23, 2026. Low‑privileged users could use their Full Name as a vector for a stored XSS attack. The name is included in system‑generated emails, whose content is stored in the details field of the userlog table. An admin user viewing the email content through userlog-details.php would have any malicious…
When was the CVE record for CVE-2026-44956 published?
The CVE record for CVE-2026-44956 was published on June 23, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-44956 actively exploited?
CVE-2026-44956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-44956?
No fix for CVE-2026-44956 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 CVE record's CNA (HackerOne) lists Revive Adserver versions up to and including 6.0.6 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-44956 are linked in the Vendor Advisories panel on this page.

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