CVE-2026-44961

UNRATEDCVSS · not yet scored
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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.

The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.

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
33rd
KEV
Not listed

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

June 25, 2026

References (1)

Vendor Advisories for CVE-2026-44961(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 / 28× 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 99 of 126 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 27 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-12 16:04 UTCEG score recompute
  5. 2026-10-11 19:47 UTCEG score recompute
  6. 2026-10-11 17:01 UTCEG score recompute
  7. 2026-10-11 14:26 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-09-23 12:01 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  23. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-09-18 10:28 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
Show 74 more
  1. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  4. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-09-13 12:22 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  6. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  11. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-08-30 20:26 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  17. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  24. 2026-08-22 13:51 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  25. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  26. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  27. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  28. 2026-08-19 04:49 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  29. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  30. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  31. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  32. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  33. 2026-08-15 10:27 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  34. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  35. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  36. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  37. 2026-08-12 04:48 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  38. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  39. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  40. 2026-08-08 23:05 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  41. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  42. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  43. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  44. 2026-08-05 17:26 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  45. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  46. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  47. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  48. 2026-08-02 08:14 UTCEG score recompute
  49. 2026-08-02 08:14 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  50. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  51. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  52. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  53. 2026-07-30 02:35 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  54. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  55. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  56. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  57. 2026-07-26 15:53 UTCEG score recompute
  58. 2026-07-26 15:53 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  59. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  60. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  61. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  62. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  63. 2026-07-23 03:15 UTCEG score recompute
  64. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  65. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-07-19 14:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  67. 2026-07-19 02:29 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  68. 2026-07-18 10:04 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  69. 2026-07-16 17:03 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  70. 2026-07-16 09:28 UTCGHSA enrichmentGHSA-9wv7-mm8f-m6cx · GitHub severity LOW
  71. 2026-07-15 16:57 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  72. 2026-07-15 02:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  73. 2026-07-13 22:30 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  74. 2026-07-13 06:13 UTCEPSS rescoreEPSS 0.3% · 25th percentile

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-44961?
CVE-2026-44961 is a vulnerability whose severity is not yet rated; its CVE record was published on June 23, 2026. The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.
When was the CVE record for CVE-2026-44961 published?
The CVE record for CVE-2026-44961 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 June 25, 2026; the record at its source may have been updated since.
Is CVE-2026-44961 actively exploited?
CVE-2026-44961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-44961?
No fix for CVE-2026-44961 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-2026-44961 are linked in the Vendor Advisories panel on this page.

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