CVE-2026-16198

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreHIGH confidence

Score 5.6 from GitHub Security Advisory (severity: LOW) published 2026-07-19. a secondary CVSS source baseline 5.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
5.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.6Exploit: NoneExposed: 0

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

A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in authentication bypass using alternate channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is regarded as difficult. The exploit is now public and may be used. The patch is named 017601354be38cb027ff3ffb01aed79bd5d12610. Applying a patch is the recommended action to fix this issue.

CVSS v3
5.6
EG Score
5.6(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity56% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
45.4%
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_pr, github_commit.
generic

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

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

commit 017601354be3 (sipeed/picoclaw)

Fix landed in sipeed/picoclaw commit 017601354be3 — awaiting tagged release

https://github.com/sipeed/picoclaw/commit/017601354be38cb027ff3ffb01aed79bd5d12610
github_pr

feat(web): harden launcher access control

Fix merged in sipeed/picoclaw PR #3083 on 2026-06-11 — awaiting tagged release

https://github.com/sipeed/picoclaw/pull/3083
generic

[Security] PicoClaw launcher `allowed_cidrs` can be bypassed through same-host loopback proxying during first-run setup · Issue #3080 · sipeed/picoclaw · GitHub

https://github.com/sipeed/picoclaw/issues/3080

Vendor Advisories for CVE-2026-16198(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 17× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:05 UTCEG score recompute
  3. 2026-07-22 23:56 UTCEG score recompute
  4. 2026-07-22 23:56 UTCGHSA enrichment
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:25 UTCNVD updateCVSS v4 → 2.9
  7. 2026-07-21 15:24 UTCEPSS rescore
  8. 2026-07-21 14:37 UTCMITRE cvelistV5CVSS v4 → 6.3
  9. 2026-07-20 17:50 UTCEG score recompute
  10. 2026-07-20 17:50 UTCGHSA enrichment
  11. 2026-07-20 17:08 UTCEPSS rescore
  12. 2026-07-19 14:30 UTCEPSS rescore
  13. 2026-07-19 02:06 UTCEG score recompute
  14. 2026-07-19 02:06 UTCGHSA enrichment
  15. 2026-07-19 02:05 UTCNVD updateCVSS v4 → 2.9
  16. 2026-07-18 23:50 UTCEG score recompute
  17. 2026-07-18 23:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16198?
CVE-2026-16198 is a medium vulnerability published on July 18, 2026. A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/accesscontrol.go of the component First Run Setup. Performing a manipulation of the argument allowedcidrs results in authentication bypass using alternate…
When was CVE-2026-16198 disclosed?
CVE-2026-16198 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-2026-16198 actively exploited?
CVE-2026-16198 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-16198?
CVE-2026-16198 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-16198?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16198, 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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