CVE-2026-61607

MEDIUMPre-NVD 4.64.6
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 4.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (19th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
4.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (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: 0.3%CVSS: 4.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.2, the Grav API plugin POST /api/v1/media pipeline in HandlesMediaUploads::processUploadedFile() validates an SVG filename extension but does not invoke Security::sanitizeSVG(). An attacker with api.media.write permission can store an SVG containing JavaScript, and the server returns the file as Content-Type: image/svg+xml so the script executes when a victim opens it, allowing session data theft and authenticated actions. This issue is fixed in version 1.0.2.

CVSS v3
4.6
EG Score
4.6MEDIUMmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity46% × 45%
The EG Score, 4.6 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (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

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

1.0.2

Patch available: getgrav/grav-plugin-api 1.0.2

https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.2
GitHub commit Patch Available

commit d25eedb84a38 (getgrav/grav-plugin-api)

Patch available: getgrav/grav-plugin-api 1.0.2 (contains commit d25eedb84a38)

https://github.com/getgrav/grav-plugin-api/commit/d25eedb84a387f2c71b12a374f2a4b3d74339a7e
GitHub advisoryMentions a patch (unverified)

Stored XSS via SVG Upload - API Media Pipeline Bypasses Sanitizer · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-7vhm-8x52-2r5p

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 43× 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. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-10-12 15:50 UTCEG score recompute
  5. 2026-10-11 19:34 UTCEG score recompute
  6. 2026-10-11 16:49 UTCEG score recompute
  7. 2026-10-11 14:11 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-07 10:28 UTCEG score recompute
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-10-06 07:59 UTCEG score recompute
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  18. 2026-10-03 16:56 UTCEG score recompute
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  20. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  21. 2026-10-02 12:58 UTCEG score recompute
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-10-01 10:49 UTCEG score recompute
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  25. 2026-09-30 08:46 UTCEG score recompute
Show 60 more
  1. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  2. 2026-09-28 09:04 UTCEG score recompute
  3. 2026-09-27 07:00 UTCEG score recompute
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-09-25 03:54 UTCEG score recompute
  6. 2026-09-24 01:49 UTCEG score recompute
  7. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  8. 2026-09-22 23:45 UTCEG score recompute
  9. 2026-09-21 21:31 UTCEG score recompute
  10. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  11. 2026-09-19 17:19 UTCEG score recompute
  12. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  13. 2026-09-18 15:15 UTCEG score recompute
  14. 2026-09-17 13:11 UTCEG score recompute
  15. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  16. 2026-09-16 11:05 UTCEG score recompute
  17. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  18. 2026-09-15 09:00 UTCEG score recompute
  19. 2026-09-14 06:56 UTCEG score recompute
  20. 2026-09-13 04:52 UTCEG score recompute
  21. 2026-09-12 02:47 UTCEG score recompute
  22. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  23. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  24. 2026-09-11 00:42 UTCEG score recompute
  25. 2026-09-09 02:37 UTCEG score recompute
  26. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  27. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  28. 2026-09-07 06:37 UTCEG score recompute
  29. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  30. 2026-09-06 04:19 UTCEG score recompute
  31. 2026-09-05 02:15 UTCEG score recompute
  32. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  33. 2026-09-02 21:19 UTCEG score recompute
  34. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  35. 2026-09-01 17:16 UTCEG score recompute
  36. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  37. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  38. 2026-08-31 15:10 UTCEG score recompute
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  40. 2026-08-30 13:00 UTCEG score recompute
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  42. 2026-08-29 10:56 UTCEG score recompute
  43. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  44. 2026-08-28 08:50 UTCEG score recompute
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  46. 2026-08-27 06:45 UTCEG score recompute
  47. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  48. 2026-08-26 04:39 UTCEG score recompute
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  50. 2026-08-25 02:35 UTCEG score recompute
  51. 2026-08-24 00:31 UTCEG score recompute
  52. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  53. 2026-08-22 22:27 UTCEG score recompute
  54. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  55. 2026-08-21 20:23 UTCEG score recompute
  56. 2026-08-21 19:44 UTCEG score recompute
  57. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  58. 2026-08-19 16:24 UTCEG score recompute
  59. 2026-08-19 15:38 UTCEG score recomputeFirst assessed: 4.6 MEDIUM
  60. 2026-08-19 15:37 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-61607?
CVE-2026-61607 is a medium-severity vulnerability; its CVE record was published on August 19, 2026. Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.2, the Grav API plugin POST /api/v1/media pipeline in HandlesMediaUploads::processUploadedFile() validates an SVG filename extension but does not invoke Security::sanitizeSVG(). An…
When was the CVE record for CVE-2026-61607 published?
The CVE record for CVE-2026-61607 was published on August 19, 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 9, 2026; the record at its source may have been updated since.
Is CVE-2026-61607 actively exploited?
CVE-2026-61607 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61607?
CVE-2026-61607 has a CVSS base score of 4.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61607?
A fix for CVE-2026-61607 is available: update to the fixed version the vendor names in its advisory.

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