CVE-2026-57997

MEDIUMPre-NVD 4.84.8
EchelonGraph scoreMEDIUM confidence

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

Score 4.8 from GitHub Security Advisory published 2026-06-30. The CNA's CVSS baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
4.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.8Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass algorithm restrictions and weaken authentication controls.

CVSS v3
4.8
EG Score
4.8MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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 (value × EchelonGraph’s weight)
Severity48% × 45%
The EG Score, 4.8 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.2%
EPSS %ILE
15th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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 29, 2026

Last Modified

July 9, 2026

Advisory Details (4)

Auto-updated Jun 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
Web page

Strapi users-permissions - JWT Algorithm Confusion via Missing Algorithm Configuration | Advisories | VulnCheck

https://www.vulncheck.com/advisories/strapi-users-permissions-jwt-algorithm-confusion-via-missing-algorithm-configuration
Web page

GitHub - strapi/strapi: 🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first. · GitHub

https://github.com/strapi/strapi
GitHub pull request

security(users-permissions): default legacy JWT verify to HS256

Fix merged in strapi/strapi PR #26752 on 2026-06-29 — awaiting tagged release

https://github.com/strapi/strapi/pull/26752
Web page

Strapi JWT Algorithm Confusion Vulnerability · Issue #26587 · strapi/strapi · GitHub

https://github.com/strapi/strapi/issues/26587

Vendor Advisories for CVE-2026-57997(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 12× in last 7d / 36× 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 100 of 201 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. None are among the latest 100 rows. The 101 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-13 18:24 UTCOSV refresh
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-10-12 15:53 UTCEG score recompute
  6. 2026-10-11 19:37 UTCEG score recompute
  7. 2026-10-11 16:52 UTCEG score recompute
  8. 2026-10-11 14:14 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 75 more
  1. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  2. 2026-09-23 07:25 UTCEG score recompute
  3. 2026-09-23 07:25 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  4. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  6. 2026-09-18 06:55 UTCEG score recompute
  7. 2026-09-18 06:55 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  8. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  9. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  10. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  11. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  12. 2026-09-14 00:50 UTCEG score recompute
  13. 2026-09-14 00:50 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  14. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  15. 2026-09-12 15:13 UTCEG score recompute
  16. 2026-09-12 15:13 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  17. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  18. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  19. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  20. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  21. 2026-09-06 14:39 UTCEG score recompute
  22. 2026-09-06 14:39 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  23. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  24. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  27. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  28. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  29. 2026-08-30 18:23 UTCEG score recompute
  30. 2026-08-30 18:23 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  31. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  32. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  33. 2026-08-27 22:45 UTCEG score recompute
  34. 2026-08-27 22:45 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  35. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  36. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  37. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  38. 2026-08-24 12:39 UTCEG score recompute
  39. 2026-08-24 12:39 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  40. 2026-08-23 09:16 UTCEG score recompute
  41. 2026-08-23 09:16 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  42. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  43. 2026-08-22 08:36 UTCEG score recompute
  44. 2026-08-22 08:36 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  45. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  46. 2026-08-21 06:21 UTCEG score recompute
  47. 2026-08-21 06:21 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  48. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  49. 2026-08-20 05:40 UTCEG score recompute
  50. 2026-08-20 05:40 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  51. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  52. 2026-08-18 23:09 UTCEG score recompute
  53. 2026-08-18 23:08 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  54. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  55. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  56. 2026-08-17 10:58 UTCEG score recompute
  57. 2026-08-17 10:58 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  58. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  59. 2026-08-16 10:17 UTCEG score recompute
  60. 2026-08-16 10:17 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  61. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  62. 2026-08-15 09:37 UTCEG score recompute
  63. 2026-08-15 09:37 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  64. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  65. 2026-08-14 08:56 UTCEG score recompute
  66. 2026-08-14 08:56 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  67. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  68. 2026-08-13 08:15 UTCEG score recompute
  69. 2026-08-13 08:15 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  70. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  71. 2026-08-12 07:34 UTCEG score recompute
  72. 2026-08-12 07:34 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  73. 2026-08-11 06:53 UTCEG score recompute
  74. 2026-08-11 06:53 UTCGHSA enrichmentGHSA-93c7-w42j-xh4p · GitHub CVSS 4.8
  75. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57997?
CVE-2026-57997 is a medium-severity vulnerability; its CVE record was published on June 29, 2026. Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass…
When was CVE-2026-57997 made public?
CVE-2026-57997 was made public on February 6, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on June 29, 2026. EchelonGraph's copy of the record carries a last-modified date of July 9, 2026; the record at its source may have been updated since.
Is CVE-2026-57997 actively exploited?
CVE-2026-57997 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57997?
CVE-2026-57997 has a CVSS base score of 4.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-57997?
An upstream fix for CVE-2026-57997 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-57997 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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