CVE-2026-88742

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 87% 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: cisa-adp, epss
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Bacularis 1.0.0 - 6.5.0 is vulnerable to Stored cross-site scripting (XSS) in the client address field.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 22, 2026

Advisory Details (2)

Auto-updated Sep 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

[ RESEARCH ] - CVE-2026-88742 - Stored Cross Site Scripting (XSS) in Bacularis 1.0.0 - 6.5.0 client address · HEKK

https://hekk.one/posts/research/cve-2026-88742/
generic

GitHub - hekk-one/CVE: Common Vulnerabilities and Exposures · GitHub

https://github.com/hekk-one/CVE

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 17× 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. 2026-09-24 23:28 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 21:51 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 19:07 UTCEG score recompute
  6. 2026-09-22 16:01 UTCEPSS rescore
  7. 2026-09-21 21:09 UTCEPSS rescore
  8. 2026-09-21 16:25 UTCEG score recompute▲ 5.40
  9. 2026-09-21 16:25 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  10. 2026-09-20 20:16 UTCEPSS rescore
  11. 2026-09-18 22:12 UTCEG score recompute
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-17 19:32 UTCEPSS rescore
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-15 20:32 UTCNVD update
  16. 2026-09-15 19:23 UTCEG score recompute
  17. 2026-09-15 19:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88742?
CVE-2026-88742 is a medium vulnerability published on September 15, 2026. Bacularis 1.0.0 - 6.5.0 is vulnerable to Stored cross-site scripting (XSS) in the client address field.
When was CVE-2026-88742 disclosed?
CVE-2026-88742 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88742 actively exploited?
CVE-2026-88742 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.2% of all scored CVEs.
What is the CVSS score of CVE-2026-88742?
CVE-2026-88742 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-88742?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88742, 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

Explore the affected products and dependency analysis for CVE-2026-88742

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