CVE-2024-38526

HIGHNVD 7.27.2
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.2 under NVD CVSS v3. EPSS exploit probability: 3.8% (90th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
7.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 3.8%CVSS: 7.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

pdoc provides API Documentation for Python Projects. Documentation generated with pdoc --math linked to JavaScript files from polyfill.io. The polyfill.io CDN has been sold and now serves malicious code. This issue has been fixed in pdoc 14.5.1.

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
63
EG Risk 63/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity72% × 45%
Impact severity (EG Severity): CVSS 7.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.8%
EPSS %ILE
90th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.2): severity, escalated by confirmed exploitation. This CVE's 7.2 is its impact severity (EG Severity), not escalated.

EG Severity
7.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
3.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 26, 2024

Last Modified

April 15, 2026

Advisory Details (4)

Auto-updated Oct 18, 2026
Patch available. Sources: github, github_pr.
Web page

polyfill.io in pdoc (CVE-2024-38526) - vsociety

https://www.vicarius.io/vsociety/posts/polyfillio-in-pdoc-cve-2024-38526
Web page

Polyfill supply chain attack hits 100K+ sites | Sansec

https://sansec.io/research/polyfill-supply-chain-attack
GitHub advisoryMentions a patch (unverified)

pdoc embeds link to malicious CDN if math mode is enabled · Advisory · mitmproxy/pdoc · GitHub

https://github.com/mitmproxy/pdoc/security/advisories/GHSA-5vgj-ggm4-fg62
GitHub pull request

remove references to polyfill.io

Fix merged in mitmproxy/pdoc PR #703 on 2024-06-25 — awaiting tagged release

https://github.com/mitmproxy/pdoc/pull/703

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pdoc0.0.1 ... 9.0.1 (104 versions)
  • every version up to 14.5.1: fixed in 14.5.1
—

Data Freshness Timeline

(refreshed 9× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 190 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 97 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-21 16:29 UTCEPSS rescoreEPSS 3.8% · 90th percentile
  2. 2026-10-20 19:39 UTCEG score recompute
  3. 2026-10-20 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  4. 2026-10-19 16:29 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  5. 2026-10-18 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  6. 2026-10-18 07:10 UTCEG score recompute
  7. 2026-10-17 16:31 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  8. 2026-10-16 16:36 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  9. 2026-10-15 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  10. 2026-10-14 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  11. 2026-10-13 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  12. 2026-10-12 17:50 UTCEG score recompute
  13. 2026-10-12 16:31 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  14. 2026-10-11 21:15 UTCEG score recompute
  15. 2026-10-11 16:08 UTCEG score recompute
  16. 2026-10-11 13:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  17. 2026-10-10 19:58 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  18. 2026-10-09 20:05 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  19. 2026-10-08 17:07 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  20. 2026-10-07 23:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  21. 2026-10-07 10:54 UTCOSV refresh
  22. 2026-10-06 15:15 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  23. 2026-10-05 17:41 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  24. 2026-10-03 14:24 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  25. 2026-10-01 19:48 UTCEPSS rescoreEPSS 3.8% · 89th percentile
Show 68 more
  1. 2026-09-30 19:48 UTCEG score recompute
  2. 2026-09-30 15:01 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  3. 2026-09-29 15:17 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  4. 2026-09-28 13:49 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  5. 2026-09-27 13:44 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  6. 2026-09-26 15:57 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  7. 2026-09-26 00:23 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  8. 2026-09-24 14:01 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  9. 2026-09-23 13:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  10. 2026-09-22 14:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  11. 2026-09-21 20:32 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  12. 2026-09-20 20:14 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  13. 2026-09-19 15:40 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  14. 2026-09-18 19:26 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  15. 2026-09-17 17:06 UTCOSV refresh
  16. 2026-09-16 14:06 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  17. 2026-09-15 03:08 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  18. 2026-09-13 16:45 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  19. 2026-09-12 14:59 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  20. 2026-09-11 14:51 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  21. 2026-09-11 09:35 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  22. 2026-09-08 21:58 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  23. 2026-09-07 15:59 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  24. 2026-09-06 13:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  25. 2026-09-05 15:26 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  26. 2026-09-04 13:59 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  27. 2026-09-04 05:05 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  28. 2026-09-02 14:10 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  29. 2026-09-01 13:52 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  30. 2026-09-01 04:37 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  31. 2026-08-30 19:15 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  32. 2026-08-30 01:20 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  33. 2026-08-29 17:13 UTCOSV refresh
  34. 2026-08-28 21:39 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  35. 2026-08-27 14:23 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  36. 2026-08-26 14:44 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  37. 2026-08-25 13:47 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  38. 2026-08-24 14:15 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  39. 2026-08-23 00:18 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  40. 2026-08-21 23:47 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  41. 2026-08-20 22:53 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  42. 2026-08-19 17:02 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  43. 2026-08-18 13:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  44. 2026-08-17 13:45 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  45. 2026-08-16 14:54 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  46. 2026-08-16 02:13 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  47. 2026-08-15 01:28 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  48. 2026-08-13 21:59 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  49. 2026-08-13 04:30 UTCOSV refresh
  50. 2026-08-12 13:49 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  51. 2026-08-11 13:40 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  52. 2026-08-10 23:58 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  53. 2026-08-09 13:45 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  54. 2026-08-08 16:35 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  55. 2026-08-07 16:25 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  56. 2026-08-06 13:45 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  57. 2026-08-05 19:16 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  58. 2026-08-04 15:08 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  59. 2026-08-04 10:36 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  60. 2026-08-03 10:34 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  61. 2026-08-02 02:25 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  62. 2026-08-01 04:14 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  63. 2026-07-30 16:26 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  64. 2026-07-30 01:29 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  65. 2026-07-28 15:34 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  66. 2026-07-28 12:20 UTCOSV refresh
  67. 2026-07-27 14:11 UTCEPSS rescoreEPSS 3.8% · 88th percentile
  68. 2026-07-25 14:16 UTCEPSS rescoreEPSS 3.8% · 88th percentile

Public detection checks

(1 reference)

A public detection check is referenced for this CVE (1 GitHub checker repository). A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code.

  • GitHub checkerpadayali-JD/pollyscan
    Published Feb 18, 2025

    A specialized vulnerability scanner designed to detect CVE-2024-38526, the Polyfill.io Supply Chain Attack, helping organizations identify and mitigate risks associated with compromised third-party dependencies.

    Open source ↗

Frequently asked(5)

What is CVE-2024-38526?
CVE-2024-38526 is a high-severity vulnerability; its CVE record was published on June 26, 2024. pdoc provides API Documentation for Python Projects. Documentation generated with pdoc --math linked to JavaScript files from polyfill.io. The polyfill.io CDN has been sold and now serves malicious code. This issue has been fixed in pdoc 14.5.1.
When was the CVE record for CVE-2024-38526 published?
The CVE record for CVE-2024-38526 was published on June 26, 2024. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 15, 2026; the record at its source may have been updated since.
Is CVE-2024-38526 actively exploited?
CVE-2024-38526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.8% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-38526?
CVE-2024-38526 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2024-38526?
A fix for CVE-2024-38526 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-38526

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