CVE-2025-51606

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2025-08-21. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

hippo4j 1.0.0 to 1.5.0, uses a hard-coded secret key in its JWT (JSON Web Token) creation. This allows attackers with access to the source code or compiled binary to forge valid access tokens and impersonate any user, including privileged ones such as "admin". The vulnerability poses a critical security risk in systems where authentication and authorization rely on the integrity of JWTs.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
27.0%
KEV
Not listed

Published

August 21, 2025

Last Modified

April 15, 2026

Advisory Details (1)

Auto-updated May 22, 2026
No patch confirmed yet.
generic

cve-proofs/POC-20250610-01.md at main · ShenxiuSec/cve-proofs · GitHub

https://github.com/ShenxiuSec/cve-proofs/blob/main/POC-20250610-01.md

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
mavencn.hippo4j:hippo4j-core—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)
Maven(1)
PackageVulnerable rangeFixed inDependents
cn.hippo4j:hippo4j-core1.1.0 ... 1.5.0 (32 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 39× 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.

Showing the most recent 100 of 118 total refreshes for this CVE.

  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 02:57 UTCEG score recompute
  3. 2026-07-22 14:08 UTCEPSS rescore
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  41. 2026-06-07 15:24 UTCEPSS rescore
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  44. 2026-06-05 22:46 UTCEPSS rescore
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  75. 2026-05-24 16:57 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

1 shown

maven:cn.hippo4j:hippo4j-core

Frequently asked(5)

What is CVE-2025-51606?
CVE-2025-51606 is a high vulnerability published on August 21, 2025. hippo4j 1.0.0 to 1.5.0, uses a hard-coded secret key in its JWT (JSON Web Token) creation. This allows attackers with access to the source code or compiled binary to forge valid access tokens and impersonate any user, including privileged ones such as "admin". The vulnerability poses a critical…
When was CVE-2025-51606 disclosed?
CVE-2025-51606 was first published in the National Vulnerability Database on August 21, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-51606 actively exploited?
CVE-2025-51606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-51606?
CVE-2025-51606 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-51606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-51606, 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

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