CVE-2026-32773

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.1Exploit: None knownExposed: 0

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

There is a lack of XSS escaping in the Spark History Server prior to 3.5.8 which allows a malicious Spark job to generate arbitrary unescaped frontend code which could lead to a minimal privilege escalation in browser. Users are encouraged to upgrade to Spark 3.5.8 or later.

This CVE is marked as "low" since the path to exploit requires both relatively high permissions (ability to launch a Spark job) and requires tricking a user with higher permissions to log in and visit the Spark history web page.

Users are encouraged to upgrade their Spark history servers to Spark 3.5.8 or later.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic
https://lists.apache.org/thread/k36prh3oxl1z6ov7w8rpmfnt07hmzw3v

Vendor Advisories for CVE-2026-32773(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)
PyPI(1)
PackageVulnerable rangeFixed inDependents
pyspark3.0.0 ... 3.5.7 (30 versions)3.5.8—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 50× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 08:05 UTCEG score recompute
  4. 2026-09-18 08:05 UTCGHSA enrichment
  5. 2026-09-17 19:30 UTCEPSS rescore
  6. 2026-09-17 06:00 UTCEG score recompute
  7. 2026-09-17 06:00 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 03:51 UTCEG score recompute
  11. 2026-09-16 03:50 UTCGHSA enrichment
  12. 2026-09-15 01:44 UTCGHSA enrichment
  13. 2026-09-13 23:39 UTCEG score recompute
  14. 2026-09-13 23:39 UTCGHSA enrichment
  15. 2026-09-13 16:47 UTCEPSS rescore
  16. 2026-09-12 21:34 UTCEG score recompute
  17. 2026-09-12 21:34 UTCGHSA enrichment
  18. 2026-09-12 15:01 UTCEPSS rescore
  19. 2026-09-11 19:28 UTCEG score recompute
  20. 2026-09-11 19:28 UTCGHSA enrichment
  21. 2026-09-11 14:52 UTCEPSS rescore
  22. 2026-09-10 17:22 UTCEG score recompute
  23. 2026-09-10 17:22 UTCGHSA enrichment
  24. 2026-09-10 09:34 UTCEPSS rescore
  25. 2026-09-09 15:16 UTCEG score recompute
Show 25 more
  1. 2026-09-09 15:16 UTCGHSA enrichment
  2. 2026-09-08 22:00 UTCEPSS rescore
  3. 2026-09-08 13:09 UTCGHSA enrichment
  4. 2026-09-08 01:17 UTCEG score recompute
  5. 2026-09-08 01:17 UTCGHSA enrichment
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 23:12 UTCEG score recompute
  8. 2026-09-06 23:12 UTCGHSA enrichment
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-05 21:05 UTCEG score recompute
  12. 2026-09-05 21:05 UTCGHSA enrichment
  13. 2026-09-04 19:00 UTCEG score recompute
  14. 2026-09-04 19:00 UTCGHSA enrichment
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-03 16:55 UTCGHSA enrichment
  17. 2026-09-03 15:55 UTCEG score recompute
  18. 2026-09-03 15:55 UTCGHSA enrichment
  19. 2026-09-02 13:33 UTCGHSA enrichment
  20. 2026-09-02 12:54 UTCEG score recompute▲ 6.10
  21. 2026-09-02 12:54 UTCGHSA enrichment
  22. 2026-09-02 12:53 UTCMITRE cvelistV5CVSS v3 → 6.1 · severity → MEDIUM
  23. 2026-09-02 11:21 UTCNVD update
  24. 2026-09-02 11:01 UTCEG score recompute
  25. 2026-09-02 10:58 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-32773?
CVE-2026-32773 is a medium vulnerability published on September 2, 2026. There is a lack of XSS escaping in the Spark History Server prior to 3.5.8 which allows a malicious Spark job to generate arbitrary unescaped frontend code which could lead to a minimal privilege escalation in browser. Users are encouraged to upgrade to Spark 3.5.8 or later. This CVE is marked as…
When was CVE-2026-32773 disclosed?
CVE-2026-32773 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-32773 actively exploited?
CVE-2026-32773 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.7% of all scored CVEs.
What is the CVSS score of CVE-2026-32773?
CVE-2026-32773 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-32773?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32773, 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-2026-32773

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