CVE-2023-47621

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.0% (62nd 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
Trending — 3 sources updated this week
8.8EG
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: 1.0%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Guest Entries is a php library which allows users to create, update & delete entries from the front-end of a site. In affected versions the file uploads feature did not prevent the upload of PHP files. This may lead to code execution on the server by authenticated users. This vulnerability is fixed in v3.1.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation1.0% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
1.0%
EPSS %ILE
62nd
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 (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)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 Vulnrichment) · Technical impact total (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

November 13, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 16, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Remote code execution via file uploads · Advisory · duncanmcclean/guest-entries · GitHub

https://github.com/duncanmcclean/guest-entries/security/advisories/GHSA-rw82-mhmx-grmj
GitHub commit Patch Available

commit a8e17b4413bf (duncanmcclean/guest-entries)

Patch available: duncanmcclean/guest-entries v3.1.2 (contains commit a8e17b4413bf)

https://github.com/duncanmcclean/guest-entries/commit/a8e17b4413bfbbc337a887761a6c858ef1ddb4da

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFix by version rangeDependents
doublethreedigital/guest-entriesv1.0.0 ... v3.1.1 (24 versions)
  • every version up to 3.1.2: fixed in 3.1.2
—
duncanmcclean/guest-entriesv1.0.0 ... v3.1.1 (24 versions)
  • every version up to 3.1.2: fixed in 3.1.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 31× 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 88 of 183 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. 12 repeat rows among the latest 100 are merged into the row they repeat. The 95 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:54 UTCOSV refresh
  2. 2026-10-12 16:31 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  3. 2026-10-11 21:42 UTCEG score recompute
  4. 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  5. 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  6. 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  7. 2026-10-08 17:06 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  8. 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  9. 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  10. 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  11. 2026-10-04 23:20 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  12. 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  13. 2026-10-01 19:48 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  14. 2026-09-30 16:33 UTCEG score recompute
  15. 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  16. 2026-09-29 15:17 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  17. 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  18. 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  19. 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  20. 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  21. 2026-09-23 13:46 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  22. 2026-09-22 16:58 UTCOSV refresh
  23. 2026-09-22 14:46 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  24. 2026-09-21 20:31 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  25. 2026-09-20 20:14 UTCEPSS rescoreEPSS 1.0% · 61st percentile
Show 63 more
  1. 2026-09-18 19:26 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  2. 2026-09-17 19:25 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  3. 2026-09-16 14:06 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  4. 2026-09-16 05:11 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  5. 2026-09-15 03:08 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  6. 2026-09-13 16:44 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  7. 2026-09-12 14:58 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  8. 2026-09-11 14:50 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  9. 2026-09-11 09:34 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  10. 2026-09-08 21:58 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  11. 2026-09-07 15:59 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  12. 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  13. 2026-09-05 15:26 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  14. 2026-09-04 13:58 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  15. 2026-09-04 05:04 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  16. 2026-09-03 13:16 UTCOSV refresh
  17. 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  18. 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  19. 2026-09-01 04:35 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  20. 2026-08-30 19:15 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  21. 2026-08-30 01:20 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  22. 2026-08-28 21:39 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  23. 2026-08-27 14:23 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  24. 2026-08-26 14:44 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  25. 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  26. 2026-08-24 14:14 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  27. 2026-08-23 00:17 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  28. 2026-08-21 23:47 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  29. 2026-08-20 22:53 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  30. 2026-08-19 17:02 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  31. 2026-08-18 13:46 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  32. 2026-08-17 13:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  33. 2026-08-17 02:48 UTCOSV refresh
  34. 2026-08-16 14:54 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  35. 2026-08-16 02:12 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  36. 2026-08-15 01:28 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  37. 2026-08-13 21:58 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  38. 2026-08-12 13:49 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  39. 2026-08-11 13:40 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  40. 2026-08-10 23:57 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  41. 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  42. 2026-08-08 16:35 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  43. 2026-08-07 16:25 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  44. 2026-08-06 13:45 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  45. 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  46. 2026-08-04 15:07 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  47. 2026-08-04 10:35 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  48. 2026-08-03 10:34 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  49. 2026-08-02 02:25 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  50. 2026-08-01 21:06 UTCOSV refresh
  51. 2026-08-01 04:14 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  52. 2026-07-30 16:26 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  53. 2026-07-30 01:28 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  54. 2026-07-28 15:34 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  55. 2026-07-27 14:10 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  56. 2026-07-26 14:52 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  57. 2026-07-25 14:16 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  58. 2026-07-24 14:16 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  59. 2026-07-23 14:16 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  60. 2026-07-23 02:27 UTCEG score recompute
  61. 2026-07-22 23:14 UTCEG score recompute
  62. 2026-07-22 14:06 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  63. 2026-07-21 15:23 UTCEPSS rescoreEPSS 1.0% · 59th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-47621?
CVE-2023-47621 is a high-severity vulnerability; its CVE record was published on November 13, 2023. Guest Entries is a php library which allows users to create, update & delete entries from the front-end of a site. In affected versions the file uploads feature did not prevent the upload of PHP files. This may lead to code execution on the server by authenticated users. This vulnerability is fixed…
When was the CVE record for CVE-2023-47621 published?
The CVE record for CVE-2023-47621 was published on November 13, 2023. 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2023-47621 actively exploited?
CVE-2023-47621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (62nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-47621?
CVE-2023-47621 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-47621?
A fix for CVE-2023-47621 is available: update to the fixed version the vendor names in its advisory.

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