CVE-2026-90455

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (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: epss, secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

A prior update that raised a bundled HTTP client library to a version remediating known vulnerabilities was later reverted, reintroducing the earlier, vulnerable version into a log-processing component. The only code path in that component using the library issues a request to a single fixed, trusted vendor URL at initialization and does not process attacker-controlled input through the library, limiting practical exploitability of the reintroduced version in this context.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 11, 2026
No patch confirmed yet.
generic
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json

Vendor Advisories for CVE-2026-90455(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 30× 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. 2026-09-18 19:48 UTCEG score recompute
  2. 2026-09-18 19:48 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 11:36 UTCEG score recompute
  5. 2026-09-18 11:36 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 12:03 UTCEG score recompute
  8. 2026-09-17 12:03 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 12:31 UTCEG score recompute
  11. 2026-09-16 12:31 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 13:00 UTCEG score recompute
  14. 2026-09-15 13:00 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 13:29 UTCEG score recompute
  17. 2026-09-14 13:29 UTCGHSA enrichment
  18. 2026-09-14 13:10 UTCEG score recompute
  19. 2026-09-14 13:10 UTCGHSA enrichment
  20. 2026-09-13 21:28 UTCEG score recompute
  21. 2026-09-13 21:28 UTCGHSA enrichment
  22. 2026-09-13 16:48 UTCEPSS rescore
  23. 2026-09-12 21:57 UTCEG score recompute
  24. 2026-09-12 21:57 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 5 more
  1. 2026-09-11 22:26 UTCEG score recompute
  2. 2026-09-11 22:04 UTCEG score recompute▲ 6.30
  3. 2026-09-11 22:03 UTCMITRE cvelistV5CVSS v3 → 6.3 · CVSS v4 → 6.3 · severity → MEDIUM
  4. 2026-09-11 21:59 UTCEG score recompute
  5. 2026-09-11 21:58 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90455?
CVE-2026-90455 is a medium vulnerability published on September 11, 2026. A prior update that raised a bundled HTTP client library to a version remediating known vulnerabilities was later reverted, reintroducing the earlier, vulnerable version into a log-processing component. The only code path in that component using the library issues a request to a single fixed,…
When was CVE-2026-90455 disclosed?
CVE-2026-90455 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90455 actively exploited?
CVE-2026-90455 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 87.3% of all scored CVEs.
What is the CVSS score of CVE-2026-90455?
CVE-2026-90455 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-90455?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90455, 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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