CVE-2026-40549

MEDIUMNVD 5.15.1
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.1 under NVD CVSS v3. EPSS exploit probability: 0.2% (11th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
5.1EG
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: 5.1Exploit: None knownExposed 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 CNA (CERT.PL) lists SOPlanning versions up to and including 1.55 as affected. No release containing a fix is confirmed on record.

SOPlanning is vulnerable to Cross‑Site Request Forgery (CSRF) in groupe_save create, modify and delete endpoints. An attacker can craft a malicious website that, when visited by an authenticated user, automatically sends a forged GET or POST request to the application.

This issue affects SOPlanning version 1.55 and below.

CVSS v3
5.1
EG Score
5.1MEDIUMmedium confidence
EG Risk
23
EG Risk 23/100

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)
Severity51% × 45%
The EG Score, 5.1 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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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 1, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
No fix on record yet.
Web page

Online Planning tool - SO Planning Shared Planning Software

https://www.soplanning.org/en/
Web page

Vulnerabilities in SOPlanning software | CERT Polska

https://cert.pl/en/posts/2026/06/CVE-2026-40543

Vendor Advisories for CVE-2026-40549(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 11× in last 7d / 28× 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 99 of 222 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 123 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-10-12 16:09 UTCEG score recompute
  3. 2026-10-11 19:51 UTCEG score recompute
  4. 2026-10-11 17:05 UTCEG score recompute
  5. 2026-10-11 14:31 UTCEG score recompute
  6. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  23. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 7th percentile
Show 74 more
  1. 2026-09-14 06:11 UTCEG score recompute
  2. 2026-09-14 06:11 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  3. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  6. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  7. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  10. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  11. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  12. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-08-25 03:58 UTCEG score recompute
  22. 2026-08-25 03:58 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  23. 2026-08-23 13:57 UTCEG score recompute
  24. 2026-08-23 13:57 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  25. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  26. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  27. 2026-08-21 14:53 UTCEG score recompute
  28. 2026-08-21 14:53 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  29. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-08-20 10:19 UTCEG score recompute
  31. 2026-08-20 10:19 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  32. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  33. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  34. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-08-17 13:19 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  36. 2026-08-16 15:01 UTCEG score recompute
  37. 2026-08-16 15:01 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  38. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  39. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  40. 2026-08-15 15:56 UTCEG score recompute
  41. 2026-08-15 15:56 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  43. 2026-08-14 06:18 UTCEG score recompute
  44. 2026-08-14 06:18 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  45. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  46. 2026-08-13 08:00 UTCEG score recompute
  47. 2026-08-13 08:00 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  48. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  49. 2026-08-12 09:19 UTCEG score recompute
  50. 2026-08-12 09:19 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  51. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  52. 2026-08-11 10:51 UTCEG score recompute
  53. 2026-08-11 10:51 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  54. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  55. 2026-08-10 12:33 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  56. 2026-08-09 14:16 UTCEG score recompute
  57. 2026-08-09 14:16 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  58. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  60. 2026-08-08 15:58 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  61. 2026-08-07 17:37 UTCEG score recompute
  62. 2026-08-07 17:37 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  63. 2026-08-06 19:19 UTCEG score recompute
  64. 2026-08-06 19:19 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  65. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  66. 2026-08-05 21:01 UTCEG score recompute
  67. 2026-08-05 21:01 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  68. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  69. 2026-08-04 22:43 UTCEG score recompute
  70. 2026-08-04 22:43 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj
  71. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  72. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  73. 2026-08-03 15:52 UTCEG score recompute
  74. 2026-08-03 15:52 UTCGHSA enrichmentGHSA-cxrr-8w2f-8vxj

Frequently asked(5)

What is CVE-2026-40549?
CVE-2026-40549 is a medium-severity vulnerability; its CVE record was published on June 1, 2026. SOPlanning is vulnerable to Cross‑Site Request Forgery (CSRF) in groupe_save create, modify and delete endpoints. An attacker can craft a malicious website that, when visited by an authenticated user, automatically sends a forged GET or POST request to the application. This issue affects SOPlanning…
When was the CVE record for CVE-2026-40549 published?
The CVE record for CVE-2026-40549 was published on June 1, 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 July 22, 2026; the record at its source may have been updated since.
Is CVE-2026-40549 actively exploited?
CVE-2026-40549 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-40549?
CVE-2026-40549 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-40549?
No fix for CVE-2026-40549 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 CNA (CERT.PL) lists SOPlanning versions up to and including 1.55 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-40549 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-40549

Explore →

Is Your Infrastructure Affected by CVE-2026-40549?

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