CVE-2026-94455

HIGHPre-NVD 7.17.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (18th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-84547 (ENISA EUVD)Source: ENISA EUVD

7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An HTTP endpoint intended for provisioning enterprise and reseller organisations is reachable without any session. The authentication middleware is bound only to an explicit list of controllers, and the enterprise controller is not on that list, so no authentication runs for these routes.

The endpoint's only check is that the request body carries a token bearing a valid signature from the instance secret. It does not check what that token was issued for. Login tokens are signed with the same secret and carry no purpose, audience or expiry claim, so an ordinary user's own session token satisfies the check.

Presented with such a token, the endpoint creates a new organisation holding the highest subscription tier, flagged as lifetime and with a channel allowance far above any sold plan, creates an organisation-owner account alongside it, and returns the new organisation's API key in the response body. That key is immediately valid against the public API.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
18th
KEV
Not listed

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

The EG score (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

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

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 22, 2026

Last Modified

September 22, 2026

Advisory Details (4)

Auto-updated Sep 22, 2026
Patch available. Sources: github_release, github_commit.
Web page

PSA-2026-P8W1J0: Unauthenticated /enterprise/create-user mints lifetime top-tier organizations and discloses their API key · GAdvisory

https://gadvisory.org/advisories/PSA-2026-P8W1J0
GitHub commit Patch Available

commit 9259cf2429e8 (gitroomhq/postiz-app)

Patch available: gitroomhq/postiz-app v2.24.0 (contains commit 9259cf2429e8)

https://github.com/gitroomhq/postiz-app/commit/9259cf2429e8cc0c88414e88d5e6c783d7ffba63
GitHub release Patch Available

Release v2.24.0 (gitroomhq/postiz-app)

Patch available: gitroomhq/postiz-app v2.24.0

https://github.com/gitroomhq/postiz-app/releases/tag/v2.24.0
Web page

GitHub - gitroomhq/postiz-app: 📨 The ultimate agentic social media scheduling tool 🤖 · GitHub

https://github.com/gitroomhq/postiz-app

Weakness Classification(4)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 47× 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.

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 72 is merged into the row it repeats.

  1. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  6. 2026-10-27 19:16 UTCEG score recompute
  7. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  8. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  10. 2026-10-25 13:49 UTCEG score recompute
  11. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  12. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  14. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  15. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  16. 2026-10-20 06:50 UTCEG score recompute
  17. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  18. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  19. 2026-10-18 02:58 UTCEG score recompute
  20. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  21. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  22. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  23. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  24. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  25. 2026-10-13 04:18 UTCEG score recompute
Show 46 more
  1. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  2. 2026-10-12 14:42 UTCEG score recompute
  3. 2026-10-11 19:12 UTCEG score recompute
  4. 2026-10-11 16:27 UTCEG score recompute
  5. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  6. 2026-10-11 13:40 UTCEG score recompute
  7. 2026-10-11 08:38 UTCEG score recompute
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  9. 2026-10-10 07:19 UTCEG score recompute
  10. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  11. 2026-10-08 17:14 UTCEG score recompute
  12. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  13. 2026-10-08 03:01 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  15. 2026-10-07 01:10 UTCEG score recompute
  16. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  17. 2026-10-05 23:55 UTCEG score recompute
  18. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  19. 2026-10-05 11:17 UTCEG score recompute
  20. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  21. 2026-10-03 21:23 UTCEG score recompute
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  23. 2026-10-02 20:06 UTCEG score recompute
  24. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  25. 2026-10-02 07:25 UTCEG score recompute
  26. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  27. 2026-09-30 17:20 UTCEG score recompute
  28. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  29. 2026-09-29 16:04 UTCEG score recompute
  30. 2026-09-29 03:26 UTCEG score recompute
  31. 2026-09-28 14:48 UTCEG score recompute
  32. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  33. 2026-09-28 02:10 UTCEG score recompute
  34. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  35. 2026-09-27 00:51 UTCEG score recompute
  36. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  37. 2026-09-26 12:13 UTCEG score recompute
  38. 2026-09-24 22:08 UTCEG score recompute
  39. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 16th percentile
  40. 2026-09-23 20:53 UTCEG score recompute
  41. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  42. 2026-09-22 19:38 UTCEG score recompute
  43. 2026-09-22 18:33 UTCEG score recompute
  44. 2026-09-22 17:36 UTCEG score recompute
  45. 2026-09-22 16:25 UTCEG score recomputeFirst assessed: 7.1 HIGH
  46. 2026-09-22 16:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-94455?
CVE-2026-94455 is a high-severity vulnerability; its CVE record was published on September 22, 2026. An HTTP endpoint intended for provisioning enterprise and reseller organisations is reachable without any session. The authentication middleware is bound only to an explicit list of controllers, and the enterprise controller is not on that list, so no authentication runs for these routes. The…
When was CVE-2026-94455 made public?
CVE-2026-94455 was made public on September 22, 2026: that is the date its CVE record's CNA, Postiz, gives for when the vulnerability was made public. The CVE record itself was published on September 22, 2026. EchelonGraph's copy of the record carries a last-modified date of September 22, 2026; the record at its source may have been updated since.
Is CVE-2026-94455 actively exploited?
CVE-2026-94455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-94455?
CVE-2026-94455 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-94455?
A fix for CVE-2026-94455 is available: update to the fixed version the vendor names in its advisory.

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