CVE-2026-16196

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-19. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 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. Impacted is the function isPrivateOrRestrictedIP of the file pkg/tools/integration/web.go of the component web_fetch. This manipulation causes server-side request forgery. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Patch name: 2efbe5d560e7ed9bc5209c203dc4aa6ecdbc7405. To fix this issue, it is recommended to deploy a patch.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

July 18, 2026

Last Modified

July 22, 2026

Advisory Details (4)

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

fix(tools): block 198.18.0.0/15 in SSRF guard

Fix merged in sipeed/picoclaw PR #3085 on 2026-06-10 — awaiting tagged release

https://github.com/sipeed/picoclaw/pull/3085
generic

[Security] PicoClaw `web_fetch` SSRF restriction bypass via special-use IPv4 literal `198.18.0.0/15` · Issue #3077 · sipeed/picoclaw · GitHub

https://github.com/sipeed/picoclaw/issues/3077
github_commit

commit 2efbe5d560e7 (sipeed/picoclaw)

Fix landed in sipeed/picoclaw commit 2efbe5d560e7 — awaiting tagged release

https://github.com/sipeed/picoclaw/commit/2efbe5d560e7ed9bc5209c203dc4aa6ecdbc7405
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-2026-16196(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 18× 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. 2026-07-29 09:46 UTCEG score recompute
  2. 2026-07-29 09:46 UTCGHSA enrichment
  3. 2026-07-28 10:16 UTCEG score recompute
  4. 2026-07-28 10:16 UTCGHSA enrichment
  5. 2026-07-27 14:13 UTCEPSS rescore
  6. 2026-07-27 10:44 UTCEG score recompute
  7. 2026-07-27 10:44 UTCGHSA enrichment
  8. 2026-07-26 14:54 UTCEPSS rescore
  9. 2026-07-26 14:54 UTCEPSS rescore
  10. 2026-07-26 11:14 UTCEG score recompute
  11. 2026-07-26 11:14 UTCGHSA enrichment
  12. 2026-07-25 14:17 UTCEPSS rescore
  13. 2026-07-25 14:17 UTCEPSS rescore
  14. 2026-07-24 14:17 UTCEPSS rescore
  15. 2026-07-23 14:18 UTCEPSS rescore
  16. 2026-07-23 03:05 UTCEG score recompute
  17. 2026-07-22 23:57 UTCEG score recompute
  18. 2026-07-22 23:57 UTCGHSA enrichment
  19. 2026-07-22 16:51 UTCNVD updateCVSS v4 → 2.1
  20. 2026-07-22 15:25 UTCMITRE cvelistV5CVSS v4 → 5.3
  21. 2026-07-22 14:08 UTCEPSS rescore
  22. 2026-07-21 15:24 UTCEPSS rescore
  23. 2026-07-20 17:50 UTCEG score recompute
  24. 2026-07-20 17:50 UTCGHSA enrichment
  25. 2026-07-20 17:08 UTCEPSS rescore
Show 5 more
  1. 2026-07-19 14:30 UTCEPSS rescore
  2. 2026-07-19 00:07 UTCEG score recompute
  3. 2026-07-19 00:05 UTCNVD updateCVSS v4 → 2.1
  4. 2026-07-18 23:10 UTCEG score recompute
  5. 2026-07-18 23:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16196?
CVE-2026-16196 is a medium vulnerability published on July 18, 2026. A weakness has been identified in Sipeed PicoClaw up to 0.2.9. Impacted is the function isPrivateOrRestrictedIP of the file pkg/tools/integration/web.go of the component web_fetch. This manipulation causes server-side request forgery. The attack can be initiated remotely. The exploit has been made…
When was CVE-2026-16196 disclosed?
CVE-2026-16196 was first published in the National Vulnerability Database on July 18, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16196 actively exploited?
CVE-2026-16196 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 78.9% of all scored CVEs.
What is the CVSS score of CVE-2026-16196?
CVE-2026-16196 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-16196?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16196, 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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