CVE-2026-77426

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: 0.5% (41st 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
Trending — 3 sources updated this week

Also known asEUVD-2026-84867 (ENISA EUVD) · GHSA-72h8-wp98-7hch (GitHub Security Advisories)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: 0.5%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Unleash is an open-source feature management platform. Prior to 8.0.3, the Unleash admin API contains five authorization vulnerabilities. POST /api/admin/segments/strategies assigns the Promise returned by hasPermission without awaiting it, allowing authenticated users to modify segment assignments without UPDATE_FEATURE_STRATEGY permission for the target project and environment. GET /api/admin/projects/:projectId/features/:featureName/environments/:environment/variants does not bind the requested feature to projectId, allowing cross-project variant configuration disclosure. GET .../strategies/:strategyId uses strategyId without validating the project and feature context, allowing cross-project strategy configuration disclosure. getEnvironmentInfo does not validate that the requested feature belongs to the supplied project, allowing cross-project environment information disclosure. PUT /:projectId/tags accepts feature identifiers without verifying that they belong to the URL project, allowing cross-project tag modification. This issue is fixed in version 8.0.3.

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.
Exploitation0.5% × 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
0.5%
EPSS %ILE
41st
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
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 23, 2026

Advisory Details (7)

Auto-updated Sep 22, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

v8.0.3

Patch available: Unleash/unleash v8.0.3

https://github.com/Unleash/unleash/releases/tag/v8.0.3
GitHub commit Patch Available

commit dd61d0e10f59 (Unleash/unleash)

Patch available: Unleash/unleash v8.0.3 (contains commit dd61d0e10f59)

https://github.com/Unleash/unleash/commit/dd61d0e10f5977a2e5de78df467c3a17c09fbcef
GitHub commit Patch Available

commit c93a963e95e1 (Unleash/unleash)

Patch available: Unleash/unleash v7.4.2 (contains commit c93a963e95e1)

https://github.com/Unleash/unleash/commit/c93a963e95e1b7bf1bca2a7729282a48d0eb2f6a
GitHub commit Patch Available

commit bea7effd3687 (Unleash/unleash)

Patch available: Unleash/unleash v8.0.3 (contains commit bea7effd3687)

https://github.com/Unleash/unleash/commit/bea7effd3687425630423f662136d548e100154d
GitHub commit Patch Available

commit ace121c922d2 (Unleash/unleash)

Patch available: Unleash/unleash v7.4.2 (contains commit ace121c922d2)

https://github.com/Unleash/unleash/commit/ace121c922d2e3eb6f68d95b0b6ab2fc8d824ea1
GitHub commit Patch Available

commit 7bb2829fc407 (Unleash/unleash)

Patch available: Unleash/unleash v7.5.1 (contains commit 7bb2829fc407)

https://github.com/Unleash/unleash/commit/7bb2829fc40791aa478e8ffca149c11b0f9cb05a
GitHub advisoryMentions a patch (unverified)

Missing await on permission check + cross-project IDOR in admin API · Advisory · Unleash/unleash · GitHub

https://github.com/Unleash/unleash/security/advisories/GHSA-72h8-wp98-7hch

Vendor Advisories for CVE-2026-77426(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmunleash-server @ 8.0.3 (fixes < 8.0.3)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
unleash-server—
  • every version up to 8.0.3: fixed in 8.0.3
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 49× 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.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-11-01 07:38 UTCGHSA enrichmentGHSA-72h8-wp98-7hch · GitHub severity HIGH
  3. 2026-11-01 07:38 UTCEG score recompute
  4. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  7. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-10-27 18:52 UTCEG score recompute
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-25 14:01 UTCEG score recompute
  13. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-20 08:12 UTCEG score recompute
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-18 03:12 UTCEG score recompute
  22. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 47 more
  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-10-13 06:58 UTCEG score recompute
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-12 15:37 UTCEG score recompute
  5. 2026-10-11 19:23 UTCEG score recompute
  6. 2026-10-11 16:39 UTCEG score recompute
  7. 2026-10-11 13:58 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-10-10 20:07 UTCEG score recompute
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-10 07:24 UTCEG score recompute
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-09 05:55 UTCEG score recompute
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-10-08 03:15 UTCEG score recompute
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-07 01:45 UTCEG score recompute
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-06 00:16 UTCEG score recompute
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-10-05 11:32 UTCEG score recompute
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-03 21:18 UTCEG score recompute
  24. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-02 19:51 UTCEG score recompute
  26. 2026-10-02 07:08 UTCEG score recompute
  27. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  28. 2026-09-30 16:46 UTCEG score recompute
  29. 2026-09-30 03:15 UTCEG score recompute
  30. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  31. 2026-09-29 01:47 UTCEG score recompute
  32. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-09-28 00:20 UTCEG score recompute
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  35. 2026-09-26 22:47 UTCEG score recompute
  36. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-09-26 10:03 UTCEG score recompute
  38. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-09-24 19:52 UTCEG score recompute
  40. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-09-23 18:25 UTCEG score recompute
  42. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  43. 2026-09-23 15:20 UTCEG score recompute
  44. 2026-09-23 15:15 UTCEG score recompute
  45. 2026-09-22 21:33 UTCEG score recompute
  46. 2026-09-22 20:43 UTCEG score recomputeFirst assessed: 7.1 HIGH
  47. 2026-09-22 20:42 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-77426?
CVE-2026-77426 is a high-severity vulnerability; its CVE record was published on September 22, 2026. Unleash is an open-source feature management platform. Prior to 8.0.3, the Unleash admin API contains five authorization vulnerabilities. POST /api/admin/segments/strategies assigns the Promise returned by hasPermission without awaiting it, allowing authenticated users to modify segment assignments…
When was the CVE record for CVE-2026-77426 published?
The CVE record for CVE-2026-77426 was published on September 22, 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 September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-77426 actively exploited?
CVE-2026-77426 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77426?
CVE-2026-77426 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-2026-77426?
A fix for CVE-2026-77426 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-77426 are linked in the Vendor Advisories panel on this page.

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