CVE-2026-37603

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-09-22. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Elevated

Also known asEUVD-2026-84811 (ENISA EUVD) · GHSA-j8rq-fmrx-q34r (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule 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: 0.5%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

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

The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "Improper Restriction of Excessive Authentication Attempts in the administration login of pH7Software pH7Builder (pH7 Social Dating CMS) through 19.2.0." No release containing a fix is confirmed on record.

Improper Restriction of Excessive Authentication Attempts in the administration login of pH7Software pH7Builder (pH7 Social Dating CMS) through 19.2.0. The CAPTCHA escalation flag is stored in the PHP session as captcha_admin_enabled and the CAPTCHA form element is only built when that flag is present, so a remote unauthenticated attacker who obtains a new session before each login attempt is never presented with the challenge.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100

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)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 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: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS. 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.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: 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).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule 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.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: 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

September 22, 2026

Last Modified

September 23, 2026

Advisory Details (3)

Auto-updated Sep 23, 2026
No fix on record yet.
Web pageMentions a patch (unverified)

CVE-2026-37603 & CVE-2026-37604: Admin Brute-Force Protection Bypass Chain in pH7Builder | CyberMap Group

https://cybermapgroup.com/en/blog/admin-brute-force-protection-bypass-chain-in-ph7builder
Web page

Social Daring Builder Software - 2026 Open Source Social Dating Builder Software

https://ph7builder.com
Web page

GitHub - pH7Software/pH7-Social-Dating-CMS: Self-hosted, open-source PHP 8.2+ software for building white-label dating sites, matchmaking communities, and social networks. Own your code, hosting, database, and member data. · GitHub

https://github.com/pH7Software/pH7-Social-Dating-CMS

Vendor Advisories for CVE-2026-37603(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 8× in last 7d / 52× 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.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-30 11:55 UTCOSV refresh
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  7. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  9. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  10. 2026-10-25 14:32 UTCEG score recompute
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-10-22 21:33 UTCEG score recompute
  14. 2026-10-22 21:33 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-18 03:44 UTCEG score recompute
  21. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 58 more
  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-12 16:11 UTCEG score recompute
  3. 2026-10-12 01:54 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  4. 2026-10-11 19:53 UTCEG score recompute
  5. 2026-10-11 17:06 UTCEG score recompute
  6. 2026-10-11 14:33 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-11 00:00 UTCEG score recompute
  9. 2026-10-11 00:00 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-09 22:06 UTCEG score recompute
  12. 2026-10-09 22:06 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-08 20:12 UTCEG score recompute
  15. 2026-10-08 20:12 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  16. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-07 17:58 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  19. 2026-10-06 16:03 UTCEG score recompute
  20. 2026-10-06 16:03 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-10-05 14:09 UTCEG score recompute
  24. 2026-10-05 14:09 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  26. 2026-10-04 12:16 UTCEG score recompute
  27. 2026-10-04 12:16 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  28. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  29. 2026-10-03 10:23 UTCEG score recompute
  30. 2026-10-03 10:23 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  31. 2026-10-02 08:29 UTCEG score recompute
  32. 2026-10-02 08:29 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  33. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  34. 2026-10-01 06:36 UTCEG score recompute
  35. 2026-10-01 06:36 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  36. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  37. 2026-09-30 04:43 UTCEG score recompute
  38. 2026-09-30 04:43 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  39. 2026-09-29 02:48 UTCEG score recompute
  40. 2026-09-29 02:48 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  41. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  42. 2026-09-28 00:54 UTCEG score recompute
  43. 2026-09-28 00:54 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  44. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  45. 2026-09-26 23:01 UTCEG score recompute
  46. 2026-09-26 23:00 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  47. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  48. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  49. 2026-09-25 21:07 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  50. 2026-09-24 19:14 UTCEG score recompute
  51. 2026-09-24 19:14 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r · GitHub CVSS 6.5
  52. 2026-09-23 17:20 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r
  53. 2026-09-23 16:59 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
  54. 2026-09-23 16:59 UTCGHSA enrichmentGHSA-j8rq-fmrx-q34r
  55. 2026-09-23 16:59 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  56. 2026-09-22 19:36 UTCNVD update
  57. 2026-09-22 18:48 UTCEG score recompute
  58. 2026-09-22 18:48 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-37603?
CVE-2026-37603 is a medium-severity vulnerability; its CVE record was published on September 22, 2026. Improper Restriction of Excessive Authentication Attempts in the administration login of pH7Software pH7Builder (pH7 Social Dating CMS) through 19.2.0. The CAPTCHA escalation flag is stored in the PHP session as captcha_admin_enabled and the CAPTCHA form element is only built when that flag is…
When was the CVE record for CVE-2026-37603 published?
The CVE record for CVE-2026-37603 was published on September 22, 2026. 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 September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-37603 actively exploited?
CVE-2026-37603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-37603?
CVE-2026-37603 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-37603?
No fix for CVE-2026-37603 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "Improper Restriction of Excessive Authentication Attempts in the administration login of pH7Software pH7Builder (pH7 Social Dating CMS) through 19.2.0." No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-37603 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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