CVE-2023-0297

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 95.8%, top 0% 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, nvd
Trending — 3 sources updated this weekWeaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 96%
CISA-KEV: Not listedEPSS: 96%CVSS: 9.8Exploit: NoneExposed: 0

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

Code Injection in GitHub repository pyload/pyload prior to 0.5.0b3.dev31.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
97(Attend)
EG Risk 97/100SSVC: 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
Severity98% × 45%
Exploitation96% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
99.9%
KEV
Not listed

Published

January 14, 2023

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 10, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

huntr - The world's first bug bounty platform for AI/ML

https://huntr.dev/bounties/3fd606f7-83e1-4265-b083-2e1889a05e65
github_commit

commit 7d73ba7919e5 (pyload/pyload)

Fix landed in pyload/pyload commit 7d73ba7919e5 — awaiting tagged release

https://github.com/pyload/pyload/commit/7d73ba7919e594d783b3411d7ddb87885aea782d
generic

Packet Storm Security

http://packetstormsecurity.com/files/171096/pyLoad-js2py-Python-Execution.html

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
pyload-ng0.5.0a5.dev528 ... 0.5.0b3.dev30 (46 versions)0.5.0b3.dev31—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 14× 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 02:17 UTCEG score recompute
  2. 2026-07-22 23:04 UTCEG score recompute
  3. 2026-07-20 17:05 UTCEPSS rescore
  4. 2026-07-16 08:49 UTCOSV refresh
  5. 2026-07-08 15:13 UTCEPSS rescore
  6. 2026-07-06 16:25 UTCEPSS rescore
  7. 2026-07-05 02:28 UTCEPSS rescore
  8. 2026-06-30 23:21 UTCEPSS rescore
  9. 2026-06-30 23:20 UTCEPSS rescore
  10. 2026-06-28 08:21 UTCOSV refresh
  11. 2026-06-27 03:07 UTCEPSS rescore
  12. 2026-06-27 03:07 UTCEPSS rescore
  13. 2026-06-23 21:31 UTCEPSS rescore
  14. 2026-06-23 21:31 UTCEPSS rescore
  15. 2026-06-16 17:51 UTCEPSS rescore
  16. 2026-06-16 17:51 UTCEPSS rescore
  17. 2026-06-15 17:47 UTCEPSS rescore
  18. 2026-06-13 22:59 UTCEPSS rescore
  19. 2026-06-11 13:58 UTCEPSS rescore
  20. 2026-06-11 13:58 UTCEPSS rescore
  21. 2026-06-10 18:47 UTCOSV refresh
  22. 2026-06-08 14:15 UTCEPSS rescore
  23. 2026-06-08 14:15 UTCEPSS rescore
  24. 2026-06-07 15:23 UTCEPSS rescore
  25. 2026-06-07 15:23 UTCEPSS rescore
Show 7 more
  1. 2026-06-06 13:46 UTCEPSS rescore
  2. 2026-06-06 13:46 UTCEPSS rescore
  3. 2026-06-05 22:46 UTCEPSS rescore
  4. 2026-06-05 22:46 UTCEPSS rescore
  5. 2026-05-29 13:43 UTCEPSS rescore
  6. 2026-05-25 08:37 UTCEG score recompute
  7. 2026-05-24 17:12 UTCOSV refresh

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-51532✓ verified
    First seen Jun 14, 2023

    PyLoad 0.5.0 - Pre-auth Remote Code Execution (RCE)

    Open source ↗
  • GitHub PoCSmall-ears/CVE-2023-0297
    First seen Feb 15, 2023

    poc

    Open source ↗
  • Metasploitexploit/linux/http/pyload_js2py_exec✓ verified
    First seen Jan 13, 2023

    pyLoad js2py Python Execution

    Open source ↗
  • GitHub PoCbAuh0lz/CVE-2023-0297_Pre-auth_RCE_in_pyLoad
    First seen Jan 9, 2023

    CVE-2023-0297: The Story of Finding Pre-auth RCE in pyLoad

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-0297.yaml
    First seen Jan 1, 2023

    PyLoad 0.5.0 - Pre-auth Remote Code Execution (RCE)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-0297?
CVE-2023-0297 is a critical vulnerability published on January 14, 2023. Code Injection in GitHub repository pyload/pyload prior to 0.5.0b3.dev31.
When was CVE-2023-0297 disclosed?
CVE-2023-0297 was first published in the National Vulnerability Database on January 14, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0297 actively exploited?
CVE-2023-0297 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-0297?
CVE-2023-0297 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-0297?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0297, 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-2023-0297

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