CVE-2026-72702

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-25. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

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
Severity54% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
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
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

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 total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 25, 2026

Last Modified

October 8, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav CMS before 2.0.16 Origin Validation Bypass via Referer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-cms-before-origin-validation-bypass-via-referer
githubMentions a patch (unverified)🟡 PoC Available

Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-9ccq-2jfg-qw33

Vendor Advisories for CVE-2026-72702(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)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
getgrav/grav0.8.0 ... 2.0.9 (350 versions)
  • every version up to 2.0.16: fixed in 2.0.16
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 52× 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. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-10 12:25 UTCEG score recompute
  3. 2026-10-09 20:07 UTCEPSS rescore
  4. 2026-10-08 17:13 UTCEPSS rescore
  5. 2026-10-08 16:36 UTCEG score recompute
  6. 2026-10-08 15:41 UTCEG score recompute
  7. 2026-10-08 06:26 UTCEG score recompute
  8. 2026-10-07 23:48 UTCEPSS rescore
  9. 2026-10-07 04:33 UTCEG score recompute
  10. 2026-10-06 15:18 UTCEPSS rescore
  11. 2026-10-06 02:42 UTCEG score recompute
  12. 2026-10-05 17:43 UTCEPSS rescore
  13. 2026-10-04 23:22 UTCEPSS rescore
  14. 2026-10-03 16:29 UTCEG score recompute
  15. 2026-10-03 14:26 UTCEPSS rescore
  16. 2026-10-02 11:03 UTCEG score recompute
  17. 2026-10-01 19:50 UTCEPSS rescore
  18. 2026-10-01 08:46 UTCEG score recompute
  19. 2026-09-30 06:55 UTCEG score recompute
  20. 2026-09-29 01:54 UTCEG score recompute
  21. 2026-09-28 13:52 UTCEPSS rescore
  22. 2026-09-28 00:03 UTCEG score recompute
  23. 2026-09-27 13:48 UTCEPSS rescore
  24. 2026-09-26 22:12 UTCEG score recompute
  25. 2026-09-26 15:59 UTCEPSS rescore
Show 74 more
  1. 2026-09-25 05:27 UTCEG score recompute
  2. 2026-09-24 03:36 UTCEG score recompute
  3. 2026-09-23 17:54 UTCEPSS rescore
  4. 2026-09-23 01:45 UTCEG score recompute
  5. 2026-09-21 23:53 UTCEG score recompute
  6. 2026-09-21 21:09 UTCEPSS rescore
  7. 2026-09-19 20:10 UTCEG score recompute
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 18:19 UTCEG score recompute
  10. 2026-09-17 16:11 UTCGHSA enrichment
  11. 2026-09-16 14:20 UTCEG score recompute
  12. 2026-09-16 14:20 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 12:28 UTCEG score recompute
  16. 2026-09-15 12:28 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 10:36 UTCEG score recompute
  19. 2026-09-14 10:36 UTCGHSA enrichment
  20. 2026-09-13 08:44 UTCEG score recompute
  21. 2026-09-13 08:44 UTCGHSA enrichment
  22. 2026-09-12 15:02 UTCEPSS rescore
  23. 2026-09-12 06:53 UTCEG score recompute
  24. 2026-09-12 06:53 UTCGHSA enrichment
  25. 2026-09-11 14:53 UTCEPSS rescore
  26. 2026-09-11 05:01 UTCEG score recompute
  27. 2026-09-11 05:01 UTCGHSA enrichment
  28. 2026-09-10 09:35 UTCEPSS rescore
  29. 2026-09-10 03:10 UTCGHSA enrichment
  30. 2026-09-09 01:19 UTCEG score recompute
  31. 2026-09-09 01:19 UTCGHSA enrichment
  32. 2026-09-08 22:01 UTCEPSS rescore
  33. 2026-09-07 08:08 UTCEG score recompute
  34. 2026-09-07 08:08 UTCGHSA enrichment
  35. 2026-09-06 13:48 UTCEPSS rescore
  36. 2026-09-06 06:17 UTCEG score recompute
  37. 2026-09-06 06:17 UTCGHSA enrichment
  38. 2026-09-05 04:25 UTCEG score recompute
  39. 2026-09-05 04:25 UTCGHSA enrichment
  40. 2026-09-04 05:07 UTCEPSS rescore
  41. 2026-09-04 02:34 UTCGHSA enrichment
  42. 2026-09-03 00:42 UTCEG score recompute
  43. 2026-09-03 00:42 UTCGHSA enrichment
  44. 2026-09-02 14:12 UTCEPSS rescore
  45. 2026-09-01 22:47 UTCEG score recompute
  46. 2026-09-01 22:47 UTCGHSA enrichment
  47. 2026-09-01 13:54 UTCEPSS rescore
  48. 2026-09-01 04:40 UTCEPSS rescore
  49. 2026-09-01 04:40 UTCEPSS rescore
  50. 2026-08-31 20:55 UTCGHSA enrichment
  51. 2026-08-31 00:27 UTCEG score recompute
  52. 2026-08-31 00:27 UTCGHSA enrichment
  53. 2026-08-30 19:18 UTCEPSS rescore
  54. 2026-08-30 19:17 UTCEPSS rescore
  55. 2026-08-30 01:22 UTCEPSS rescore
  56. 2026-08-29 22:36 UTCEG score recompute
  57. 2026-08-29 22:36 UTCGHSA enrichment
  58. 2026-08-28 21:42 UTCEPSS rescore
  59. 2026-08-28 20:45 UTCEG score recompute
  60. 2026-08-28 20:45 UTCGHSA enrichment
  61. 2026-08-28 19:51 UTCEG score recompute
  62. 2026-08-28 19:51 UTCGHSA enrichment
  63. 2026-08-28 08:04 UTCEG score recompute
  64. 2026-08-28 08:03 UTCGHSA enrichment
  65. 2026-08-27 14:25 UTCEPSS rescore
  66. 2026-08-27 06:09 UTCEG score recompute
  67. 2026-08-27 06:08 UTCGHSA enrichment
  68. 2026-08-26 14:47 UTCEPSS rescore
  69. 2026-08-26 04:13 UTCEG score recompute
  70. 2026-08-26 04:13 UTCGHSA enrichment
  71. 2026-08-25 13:49 UTCEPSS rescore
  72. 2026-08-25 02:19 UTCEG score recompute
  73. 2026-08-25 01:50 UTCEG score recompute
  74. 2026-08-25 01:50 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-72702?
CVE-2026-72702 is a medium vulnerability published on August 25, 2026. Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (strstartswith($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that…
When was CVE-2026-72702 disclosed?
CVE-2026-72702 was first published on August 25, 2026, with the most recent update on October 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72702 actively exploited?
CVE-2026-72702 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72702?
CVE-2026-72702 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72702?
A fix for CVE-2026-72702 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72702 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-72702

Explore →

Is Your Infrastructure Affected by CVE-2026-72702?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs