CVE-2026-52841

LOWPre-NVD 3.13.1
EchelonGraph scoreMEDIUM confidence

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

Score 3.1 from GitHub Security Advisory (severity: LOW) published 2026-07-29. A secondary CVSS source baseline 3.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
3.1EG
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: 3.1Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, Google::oauth at application/controllers/Google.php:278 stores its URL-supplied provider_id in the session, and oauth_callback saves the issued Google OAuth token against that row without checking the caller owns the provider. Any logged-in backend user (admin, provider, or secretary) rebinds a peer provider's Google sync to a Google account they control. The peer's appointments then sync into the attacker's calendar with each customer's name and email attached as attendee data. Version 1.6.0 patches the issue.

CVSS v3
3.1
EG Score
3.1LOWmedium confidence
EG Risk
14
EG Risk 14/100

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)
Severity31% × 45%
The EG Score, 3.1 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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

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

The CVE record names the fixed release. Apply it within your standard update timelines.

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

July 14, 2026

Last Modified

July 14, 2026

References (2)

Vendor Advisories for CVE-2026-52841(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
composeralextselegidis/easyappointments—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
alextselegidis/easyappointments1.1.0 ... 1.5.2 (24 versions)
  • every version through 1.5.2: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× 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 121 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 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-12 15:58 UTCEG score recompute
  4. 2026-10-11 19:41 UTCEG score recompute
  5. 2026-10-11 16:56 UTCEG score recompute
  6. 2026-10-11 14:19 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-10-01 13:23 UTCEG score recompute
  19. 2026-10-01 13:23 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-09-28 09:20 UTCEG score recompute
  24. 2026-09-28 09:20 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  4. 2026-09-23 03:55 UTCEG score recompute
  5. 2026-09-23 03:55 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  6. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-09-18 04:54 UTCEG score recompute
  9. 2026-09-18 04:54 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  13. 2026-09-12 01:46 UTCEG score recompute
  14. 2026-09-12 01:46 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-09-05 21:17 UTCEG score recompute
  21. 2026-09-05 21:17 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  22. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  24. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  26. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  27. 2026-08-30 05:24 UTCEG score recompute
  28. 2026-08-30 05:24 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  29. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  30. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  31. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  32. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  33. 2026-08-25 19:12 UTCEG score recompute
  34. 2026-08-25 19:12 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  35. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  37. 2026-08-22 22:33 UTCEG score recompute
  38. 2026-08-22 22:33 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  39. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-20 04:40 UTCEG score recompute
  41. 2026-08-20 04:40 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  42. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-08-17 10:47 UTCEG score recompute
  46. 2026-08-17 10:47 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-08-14 16:55 UTCEG score recompute
  51. 2026-08-14 16:55 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  52. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  53. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-08-11 23:03 UTCEG score recompute
  55. 2026-08-11 23:03 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  56. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  57. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-09 05:11 UTCEG score recompute
  59. 2026-08-09 05:11 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  60. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  61. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-06 11:18 UTCEG score recompute
  63. 2026-08-06 11:18 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  64. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  65. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  67. 2026-08-03 17:26 UTCEG score recompute
  68. 2026-08-03 17:26 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  69. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  70. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  72. 2026-07-31 23:33 UTCEG score recompute
  73. 2026-07-31 23:33 UTCGHSA enrichmentGHSA-8hm4-r66f-29wr · GitHub severity LOW · GitHub CVSS 3.1
  74. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-52841?
CVE-2026-52841 is a low-severity vulnerability; its CVE record was published on July 14, 2026. Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, Google::oauth at application/controllers/Google.php:278 stores its URL-supplied providerid in the session, and oauthcallback saves the issued Google OAuth token against that row without checking the caller owns…
When was the CVE record for CVE-2026-52841 published?
The CVE record for CVE-2026-52841 was published on July 14, 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 14, 2026; the record at its source may have been updated since.
Is CVE-2026-52841 actively exploited?
CVE-2026-52841 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-52841?
CVE-2026-52841 has a CVSS base score of 3.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-52841?
The CVE record for CVE-2026-52841 names the fix: "Version 1.6.0 patches the issue." The vendor advisories EchelonGraph has for CVE-2026-52841 are linked in the Vendor Advisories panel on this page.

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