CVE-2026-100881

LOWPre-NVD 2.62.6—
EchelonGraph scoreHIGH confidence

Score 2.6 from GitHub Security Advisory (severity: LOW) published 2026-09-28. A secondary CVSS source baseline 2.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
2.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 2.6Exploit: Elevated riskExposed services: Not assessed

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

A security vulnerability has been detected in zhistaredu StarTraining up to 3.8.1. This issue affects some unknown processing of the file application.yml. Such manipulation of the argument xss.enabled leads to cross site scripting. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Not independently exploitable: a defense-in-depth absence that amplifies CVE-2026-100880. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
2.6
EG Score
2.6LOWhigh confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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
Severity26% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 27, 2026

Last Modified

September 28, 2026

References (5)

Vendor Advisories for CVE-2026-100881(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 19× 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.

  1. 2026-10-03 14:25 UTCEPSS rescore
  2. 2026-10-01 19:49 UTCEPSS rescore
  3. 2026-10-01 17:21 UTCEG score recompute
  4. 2026-10-01 17:21 UTCGHSA enrichment
  5. 2026-09-30 15:02 UTCEPSS rescore
  6. 2026-09-29 15:20 UTCEPSS rescore
  7. 2026-09-28 15:29 UTCEG score recompute
  8. 2026-09-28 15:29 UTCGHSA enrichment
  9. 2026-09-28 13:50 UTCEPSS rescore
  10. 2026-09-28 13:29 UTCEG score recompute
  11. 2026-09-28 13:29 UTCGHSA enrichment
  12. 2026-09-28 13:29 UTCNVD updateCVSS v4 → 1.2
  13. 2026-09-28 13:07 UTCEG score recompute
  14. 2026-09-28 13:07 UTCGHSA enrichment
  15. 2026-09-28 13:07 UTCMITRE cvelistV5CVSS v4 → 2.1
  16. 2026-09-27 22:28 UTCEG score recompute
  17. 2026-09-27 22:27 UTCNVD updateCVSS v4 → 1.2
  18. 2026-09-27 21:20 UTCEG score recompute
  19. 2026-09-27 21:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100881?
CVE-2026-100881 is a low vulnerability published on September 27, 2026. A security vulnerability has been detected in zhistaredu StarTraining up to 3.8.1. This issue affects some unknown processing of the file application.yml. Such manipulation of the argument xss.enabled leads to cross site scripting. It is possible to launch the attack remotely. Attacks of this…
When was CVE-2026-100881 disclosed?
CVE-2026-100881 was first published on September 27, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100881 actively exploited?
CVE-2026-100881 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100881?
CVE-2026-100881 has a CVSS base score of 2.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100881?
No fix for CVE-2026-100881 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 vendor advisories EchelonGraph has for CVE-2026-100881 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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