CVE-2026-16084

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-07-18. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.3Exploit: NoneExposed: 0

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

A weakness has been identified in Sipeed PicoClaw up to 0.2.9. This impacts the function web_fetch of the file pkg/tools/integration/web.go. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. Patch name: c15aac21fe05ee103a470e1104bc891754e83392. To fix this issue, it is recommended to deploy a patch.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
64(Attend)
EG Risk 64/100SSVC: Attend

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
Severity73% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
32.7%
KEV
Not listed

Published

July 18, 2026

Last Modified

July 21, 2026

Advisory Details (4)

Auto-updated Jul 19, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
github_pr

fix(web): block private IPv4 embeds in ISATAP literals

Fix merged in sipeed/picoclaw PR #3143 on 2026-06-26 — awaiting tagged release

https://github.com/sipeed/picoclaw/pull/3143
generic

[Security] PicoClaw `web_fetch` SSRF guard bypass via ISATAP IPv6 literals embedding loopback/private IPv4 · Issue #3074 · sipeed/picoclaw · GitHub

https://github.com/sipeed/picoclaw/issues/3074
github_commit

commit c15aac21fe05 (sipeed/picoclaw)

Fix landed in sipeed/picoclaw commit c15aac21fe05 — awaiting tagged release

https://github.com/sipeed/picoclaw/commit/c15aac21fe05ee103a470e1104bc891754e83392
generic

GitHub - sipeed/picoclaw: Tiny, Fast, and Deployable anywhere — automate the mundane, unleash your creativity · GitHub

https://github.com/sipeed/picoclaw/

Vendor Advisories for CVE-2026-16084(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 13× in last 7d / 18× 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. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 03:05 UTCEG score recompute
  3. 2026-07-23 00:08 UTCEG score recompute
  4. 2026-07-23 00:08 UTCGHSA enrichment
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:24 UTCEPSS rescore
  7. 2026-07-21 04:38 UTCNVD updateCVSS v4 → 5.5
  8. 2026-07-21 03:31 UTCMITRE cvelistV5CVSS v4 → 6.9
  9. 2026-07-20 17:53 UTCEG score recompute
  10. 2026-07-20 17:53 UTCGHSA enrichment
  11. 2026-07-20 17:08 UTCEPSS rescore
  12. 2026-07-19 14:30 UTCEPSS rescore
  13. 2026-07-19 02:28 UTCEPSS rescore
  14. 2026-07-18 10:05 UTCEG score recompute
  15. 2026-07-18 10:05 UTCGHSA enrichment
  16. 2026-07-18 10:02 UTCNVD updateCVSS v4 → 5.5
  17. 2026-07-18 09:15 UTCEG score recompute
  18. 2026-07-18 09:14 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16084?
CVE-2026-16084 is a high vulnerability published on July 18, 2026. A weakness has been identified in Sipeed PicoClaw up to 0.2.9. This impacts the function web_fetch of the file pkg/tools/integration/web.go. This manipulation causes server-side request forgery. Remote exploitation of the attack is possible. The exploit has been made available to the public and…
When was CVE-2026-16084 disclosed?
CVE-2026-16084 was first published in the National Vulnerability Database on July 18, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16084 actively exploited?
CVE-2026-16084 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-16084?
CVE-2026-16084 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-16084?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16084, 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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