CVE-2026-25526

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 44% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

JinJava is a Java-based template engine based on django template syntax, adapted to render jinja templates. Prior to versions 2.7.6 and 2.8.3, JinJava is vulnerable to arbitrary Java execution via bypass through ForTag. This allows arbitrary Java class instantiation and file access bypassing built-in sandbox restrictions. This issue has been patched in versions 2.7.6 and 2.8.3.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
56%
KEV
Not listed

Published

February 4, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Jun 2, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Arbitrary Java Execution via JinJava Bypass through ForTag · Advisory · HubSpot/jinjava · GitHub

https://github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74
github_release Patch Available

jinjava-2.8.3

Patch available: HubSpot/jinjava jinjava-2.8.3

https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3
github_release Patch Available

jinjava-2.7.6

Patch available: HubSpot/jinjava jinjava-2.7.6

https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6
github_commit Patch Available

commit c7328dce6030 (HubSpot/jinjava)

Patch available: HubSpot/jinjava jinjava-2.7.6 (contains commit c7328dce6030)

https://github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef24441
github_commit Patch Available

commit 3d02e504d8bb (HubSpot/jinjava)

Patch available: HubSpot/jinjava jinjava-2.8.3 (contains commit 3d02e504d8bb)

https://github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
com.hubspot.jinjava:jinjava1.0.0 ... 2.7.5 (93 versions)2.7.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 51× 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 102 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
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  1. 2026-07-13 17:37 UTCOSV refresh
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  28. 2026-06-25 14:46 UTCOSV refresh
  29. 2026-06-25 13:49 UTCEPSS rescore
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  74. 2026-05-31 00:16 UTCEPSS rescore
  75. 2026-05-29 14:35 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-25526?
CVE-2026-25526 is a critical vulnerability published on February 4, 2026. JinJava is a Java-based template engine based on django template syntax, adapted to render jinja templates. Prior to versions 2.7.6 and 2.8.3, JinJava is vulnerable to arbitrary Java execution via bypass through ForTag. This allows arbitrary Java class instantiation and file access bypassing…
When was CVE-2026-25526 disclosed?
CVE-2026-25526 was first published in the National Vulnerability Database on February 4, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-25526 actively exploited?
CVE-2026-25526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 44.4% of all scored CVEs.
What is the CVSS score of CVE-2026-25526?
CVE-2026-25526 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-25526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25526, 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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