CVE-2026-54729

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% 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
Elevated
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: Elevated riskExposed: 0

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

DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.5, is_url_safe can treat localhost as safe when DNS resolver 1.1.1.1 returns NXDOMAIN because dns.resolve4 yields no address and no dns.lookup fallback occurs, allowing server-side request forgery. This issue is fixed in version 1.0.5.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
70(Attend)
EG Risk 70/100SSVC: 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
Severity87% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 31, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Jul 31, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit.
github_commit

commit 668c21792cd1 (HackingRepo/dssrf-js)

Fix landed in HackingRepo/dssrf-js commit 668c21792cd1 — awaiting tagged release

https://github.com/HackingRepo/dssrf-js/commit/668c21792cd1252baf779a176aa652e2b4c0067d
github_pr

Use dns.lookup and dns.resolve4 not just dns.resolve4 alone

Fix merged in HackingRepo/dssrf-js PR #102 on 2026-06-09 — awaiting tagged release

https://github.com/HackingRepo/dssrf-js/pull/102
github Patch Available🟡 PoC Available

any users using 1.1.1.1 DNS is impacted by SSRF · Advisory · HackingRepo/dssrf-js · GitHub

https://github.com/HackingRepo/dssrf-js/security/advisories/GHSA-5846-7qm3-r52j

Vendor Advisories for CVE-2026-54729(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
dssrf—1.0.5—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 40× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-19 19:07 UTCEG score recompute
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-18 15:50 UTCEG score recompute
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-18 01:00 UTCEG score recompute
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-16 22:36 UTCEG score recompute
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 09:40 UTCEG score recompute
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 07:48 UTCEG score recompute
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-14 05:55 UTCEG score recompute
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-12 15:05 UTCEG score recompute
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-12 02:09 UTCEG score recompute
  19. 2026-08-11 00:16 UTCEG score recompute
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-09 22:23 UTCEG score recompute
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-07 18:38 UTCEG score recompute
  24. 2026-08-06 16:46 UTCEG score recompute
  25. 2026-08-06 13:47 UTCEPSS rescore
Show 15 more
  1. 2026-08-06 03:49 UTCEG score recompute
  2. 2026-08-05 19:17 UTCEPSS rescore
  3. 2026-08-05 01:56 UTCEG score recompute
  4. 2026-08-04 15:10 UTCEPSS rescore
  5. 2026-08-04 13:00 UTCEG score recompute
  6. 2026-08-04 10:39 UTCEPSS rescore
  7. 2026-08-03 11:07 UTCEG score recompute
  8. 2026-08-03 10:36 UTCEPSS rescore
  9. 2026-08-02 09:08 UTCEG score recompute
  10. 2026-08-02 02:27 UTCEPSS rescore
  11. 2026-07-31 18:19 UTCEG score recompute
  12. 2026-07-31 18:04 UTCEG score recompute
  13. 2026-07-31 17:30 UTCEG score recompute▲ 8.70
  14. 2026-07-31 17:28 UTCMITRE cvelistV5CVSS v3 → 8.7 · CVSS v4 → 8.7
  15. 2026-07-31 17:08 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54729?
CVE-2026-54729 is a high vulnerability published on July 31, 2026. DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.5, isurlsafe can treat localhost as safe when DNS resolver 1.1.1.1 returns NXDOMAIN because dns.resolve4 yields no address and no dns.lookup fallback occurs, allowing server-side…
When was CVE-2026-54729 disclosed?
CVE-2026-54729 was first published in the National Vulnerability Database on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54729 actively exploited?
CVE-2026-54729 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 78.1% of all scored CVEs.
What is the CVSS score of CVE-2026-54729?
CVE-2026-54729 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-54729?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54729, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54729

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