CVE-2026-10721

HIGHPre-NVD 8.48.4
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (3rd 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
8.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the  in Permission, Cache, and Search components. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been placed in the database. Thanks XananasX7 for reporting.

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
38
EG Risk 38/100

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)
Severity84% × 45%
The EG Score, 8.4 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CVSS v4.0 confidentiality and integrity impact both High). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
0.1%
EPSS %ILE
3rd
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 none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CVSS v4.0 confidentiality and integrity impact both High). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CVSS v4.0 confidentiality and integrity impact both High). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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 10, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
Patch available.

Vendor Advisories for CVE-2026-10721(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
concrete5/concrete58.0 ... 9.5.1 (90 versions)
  • every version up to 9.5.2: fixed in 9.5.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 24× 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 244 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 144 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 20:14 UTCEG score recompute
  2. 2026-10-11 18:26 UTCEG score recompute
  3. 2026-10-11 15:00 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  6. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-03 09:09 UTCOSV refresh
  13. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  20. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-09-14 04:18 UTCEG score recompute
  23. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
Show 75 more
  1. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  3. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  4. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  5. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  6. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-08-31 00:19 UTCEG score recompute
  9. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-08-25 00:29 UTCEG score recompute
  15. 2026-08-23 10:54 UTCEG score recompute
  16. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-08-21 08:41 UTCEG score recompute
  19. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-08-20 08:54 UTCEG score recompute
  21. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-08-19 15:01 UTCEG score recompute
  23. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-08-16 23:43 UTCEG score recompute
  25. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-08-16 11:52 UTCEG score recompute
  27. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  28. 2026-08-15 11:00 UTCEG score recompute
  29. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-08-13 22:17 UTCEG score recompute
  31. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  32. 2026-08-12 19:32 UTCEG score recompute
  33. 2026-08-12 19:32 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  34. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  35. 2026-08-12 07:41 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  36. 2026-08-11 19:50 UTCEG score recompute
  37. 2026-08-11 19:50 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  38. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-08-11 07:59 UTCEG score recompute
  40. 2026-08-11 07:59 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  41. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  42. 2026-08-10 20:09 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  43. 2026-08-10 06:37 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  44. 2026-08-09 18:46 UTCEG score recompute
  45. 2026-08-09 18:46 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  46. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  47. 2026-08-09 06:56 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  48. 2026-08-08 19:06 UTCEG score recompute
  49. 2026-08-08 19:06 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  50. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-08-08 07:15 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  52. 2026-08-07 19:25 UTCEG score recompute
  53. 2026-08-07 19:25 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  54. 2026-08-07 07:34 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  55. 2026-08-06 19:43 UTCEG score recompute
  56. 2026-08-06 19:43 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  57. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  58. 2026-08-06 07:53 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  59. 2026-08-05 20:02 UTCEG score recompute
  60. 2026-08-05 20:02 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  61. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  62. 2026-08-04 15:57 UTCEG score recompute
  63. 2026-08-04 15:57 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  64. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  65. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  66. 2026-08-04 02:54 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  67. 2026-08-03 14:52 UTCEG score recompute
  68. 2026-08-03 14:52 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  69. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  70. 2026-08-02 21:18 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  71. 2026-08-02 09:27 UTCEG score recompute
  72. 2026-08-02 09:27 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  73. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  74. 2026-08-01 21:37 UTCGHSA enrichmentGHSA-g82f-9pw7-773w · GitHub severity HIGH
  75. 2026-08-01 09:45 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-10721?
CVE-2026-10721 is a high-severity vulnerability; its CVE record was published on June 10, 2026. Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the in Permission, Cache, and Search components. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been placed in the database. Thanks XananasX7…
When was the CVE record for CVE-2026-10721 published?
The CVE record for CVE-2026-10721 was published on June 10, 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 23, 2026; the record at its source may have been updated since.
Is CVE-2026-10721 actively exploited?
CVE-2026-10721 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-2026-10721?
CVE-2026-10721 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-10721?
A fix for CVE-2026-10721 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-10721 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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