CVE-2026-47842

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-26. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Applications using AesBytesEncryptor with the two-argument constructor or when passing a null IV generator and CBC as the encryption mode encrypt data with AES/CBC using a null (all-zero) initialization vector. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Spring Security 6.4.0 - 6.4.18 Spring Security 5.8.0 - 5.8.27 Spring Security 5.7.0 - 5.7.25

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 26, 2026

Last Modified

September 4, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation

https://spring.io/security/cve-2026-47842

Vendor Advisories for CVE-2026-47842(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 59× 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. 2026-09-19 14:48 UTCEG score recompute
  2. 2026-09-19 14:48 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 13:27 UTCEG score recompute
  5. 2026-09-18 13:27 UTCGHSA enrichment
  6. 2026-09-17 12:06 UTCEG score recompute
  7. 2026-09-17 12:06 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 10:45 UTCEG score recompute
  10. 2026-09-16 10:45 UTCGHSA enrichment
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 09:12 UTCEG score recompute
  13. 2026-09-15 09:12 UTCGHSA enrichment
  14. 2026-09-14 07:51 UTCEG score recompute
  15. 2026-09-14 07:51 UTCGHSA enrichment
  16. 2026-09-13 16:47 UTCEPSS rescore
  17. 2026-09-13 06:30 UTCGHSA enrichment
  18. 2026-09-12 05:09 UTCEG score recompute
  19. 2026-09-12 05:09 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 03:48 UTCEG score recompute
  22. 2026-09-11 03:48 UTCGHSA enrichment
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-10 02:27 UTCGHSA enrichment
  25. 2026-09-09 01:06 UTCEG score recompute
Show 34 more
  1. 2026-09-09 01:05 UTCGHSA enrichment
  2. 2026-09-08 22:00 UTCEPSS rescore
  3. 2026-09-07 23:44 UTCGHSA enrichment
  4. 2026-09-06 22:23 UTCEG score recompute
  5. 2026-09-06 22:23 UTCGHSA enrichment
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-05 21:01 UTCEG score recompute
  8. 2026-09-05 21:01 UTCGHSA enrichment
  9. 2026-09-04 19:40 UTCEG score recompute
  10. 2026-09-04 19:40 UTCGHSA enrichment
  11. 2026-09-04 05:06 UTCEPSS rescore
  12. 2026-09-04 03:17 UTCGHSA enrichment
  13. 2026-09-03 01:54 UTCEG score recompute
  14. 2026-09-03 01:54 UTCGHSA enrichment
  15. 2026-09-02 14:12 UTCEPSS rescore
  16. 2026-09-02 00:31 UTCEG score recompute
  17. 2026-09-02 00:31 UTCGHSA enrichment
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-08-31 23:09 UTCGHSA enrichment
  20. 2026-08-30 21:48 UTCEG score recompute
  21. 2026-08-30 21:48 UTCGHSA enrichment
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 01:22 UTCEPSS rescore
  24. 2026-08-29 20:27 UTCEG score recompute
  25. 2026-08-29 20:27 UTCGHSA enrichment
  26. 2026-08-28 21:41 UTCEPSS rescore
  27. 2026-08-28 19:06 UTCGHSA enrichment
  28. 2026-08-27 21:47 UTCEG score recompute
  29. 2026-08-27 21:47 UTCGHSA enrichment
  30. 2026-08-27 14:25 UTCEPSS rescore
  31. 2026-08-26 20:27 UTCEG score recompute
  32. 2026-08-26 20:08 UTCEG score recompute
  33. 2026-08-26 19:27 UTCEG score recompute
  34. 2026-08-26 19:26 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47842?
CVE-2026-47842 is a medium vulnerability published on August 26, 2026. Applications using AesBytesEncryptor with the two-argument constructor or when passing a null IV generator and CBC as the encryption mode encrypt data with AES/CBC using a null (all-zero) initialization vector. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11…
When was CVE-2026-47842 disclosed?
CVE-2026-47842 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on September 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47842 actively exploited?
CVE-2026-47842 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 99.1% of all scored CVEs.
What is the CVSS score of CVE-2026-47842?
CVE-2026-47842 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-47842?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47842, 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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