CVE-2026-49849

CRITICALPre-NVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.0% (61st 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
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 1.0%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

xShop is an open-source shop developed in Laravel. An Unrestricted File Upload vulnerability in xShop version 3.0.3 allows an authenticated administrator to upload executable files (e.g., .php). By uploading a specially crafted php file, an attacker can achieve Remote Code Execution (RCE) on the server, leading to a full system compromise. Version 3.0.4 fixes the issue.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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)
Severity91% × 45%
The EG Score, 9.1 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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
1.0%
EPSS %ILE
61st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (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

August 21, 2026

Last Modified

October 12, 2026

Advisory Details (4)

Auto-updated Sep 15, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Unrestricted File Upload in File Attachment Module in Admin panel leads to Arbitrary Code Execution · Advisory · 4xmen/xshop · GitHub

https://github.com/4xmen/xshop/security/advisories/GHSA-fc35-qjg3-f6g7
GitHub release Patch Available

v3.0.4

Patch available: 4xmen/xshop v3.0.4

https://github.com/4xmen/xshop/releases/tag/v3.0.4
GitHub pull request Patch Available

patch some bugs

Patch available: 4xmen/xshop v3.0.4 (PR #64 merged 2026-02-13)

https://github.com/4xmen/xshop/pull/64
GitHub commit Patch Available

commit dd4a3add9d6f (4xmen/xshop)

Patch available: 4xmen/xshop v3.0.4 (contains commit dd4a3add9d6f)

https://github.com/4xmen/xshop/commit/dd4a3add9d6f5b5f9dde9685e97f51057903a1db

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 52× 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. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  2. 2026-10-13 15:00 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  4. 2026-10-12 15:59 UTCEG score recompute
  5. 2026-10-11 19:43 UTCEG score recompute
  6. 2026-10-11 16:57 UTCEG score recompute
  7. 2026-10-11 14:21 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  11. 2026-10-09 05:39 UTCEG score recompute
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  13. 2026-10-08 04:50 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  15. 2026-10-06 16:49 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  17. 2026-10-06 03:03 UTCEG score recompute
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  19. 2026-10-05 01:31 UTCEG score recompute
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  21. 2026-10-03 16:40 UTCEG score recompute
  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  23. 2026-10-02 18:54 UTCEG score recompute
  24. 2026-10-01 21:24 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.0% · 61st percentile
Show 73 more
  1. 2026-09-30 20:25 UTCEG score recompute
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  3. 2026-09-29 15:36 UTCEG score recompute
  4. 2026-09-28 21:35 UTCEG score recompute
  5. 2026-09-28 13:59 UTCEG score recompute
  6. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  7. 2026-09-27 14:51 UTCEG score recompute
  8. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  9. 2026-09-27 02:23 UTCEG score recompute
  10. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  11. 2026-09-26 00:27 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  12. 2026-09-24 15:37 UTCEG score recompute
  13. 2026-09-23 20:01 UTCEG score recompute
  14. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  15. 2026-09-22 19:42 UTCEG score recompute
  16. 2026-09-21 23:26 UTCEG score recompute
  17. 2026-09-20 20:28 UTCEG score recompute
  18. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  19. 2026-09-19 18:23 UTCEG score recompute
  20. 2026-09-18 21:37 UTCEG score recompute
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  22. 2026-09-17 21:16 UTCEG score recompute
  23. 2026-09-16 15:03 UTCEG score recompute
  24. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  25. 2026-09-16 07:20 UTCEG score recompute
  26. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  27. 2026-09-15 03:37 UTCEG score recompute
  28. 2026-09-13 18:25 UTCEG score recompute
  29. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  30. 2026-09-12 15:28 UTCEG score recompute
  31. 2026-09-11 16:11 UTCEG score recompute
  32. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  33. 2026-09-11 12:06 UTCEG score recompute
  34. 2026-09-10 12:56 UTCEG score recompute
  35. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  36. 2026-09-09 01:44 UTCEG score recompute
  37. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  38. 2026-09-07 19:18 UTCEG score recompute
  39. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  40. 2026-09-06 15:26 UTCEG score recompute
  41. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  42. 2026-09-05 16:23 UTCEG score recompute
  43. 2026-09-04 16:33 UTCEG score recompute
  44. 2026-09-04 08:48 UTCEG score recompute
  45. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  46. 2026-09-02 17:01 UTCEG score recompute
  47. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  48. 2026-09-01 13:56 UTCEG score recompute
  49. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  50. 2026-09-01 05:57 UTCEG score recompute
  51. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  52. 2026-08-30 20:34 UTCEG score recompute
  53. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  54. 2026-08-30 05:10 UTCEG score recompute
  55. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  56. 2026-08-29 01:03 UTCEG score recompute
  57. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  58. 2026-08-27 18:18 UTCEG score recompute
  59. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  60. 2026-08-26 17:51 UTCEG score recompute
  61. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  62. 2026-08-25 21:41 UTCEG score recompute
  63. 2026-08-25 17:25 UTCEG score recompute
  64. 2026-08-25 17:01 UTCEG score recompute
  65. 2026-08-25 14:50 UTCEG score recompute
  66. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  67. 2026-08-24 15:48 UTCEG score recompute
  68. 2026-08-24 11:58 UTCEG score recompute
  69. 2026-08-23 01:24 UTCEG score recompute
  70. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  71. 2026-08-21 22:25 UTCEG score recompute
  72. 2026-08-21 21:24 UTCEG score recomputeFirst assessed: 9.1 CRITICAL
  73. 2026-08-21 21:24 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-49849?
CVE-2026-49849 is a critical-severity vulnerability; its CVE record was published on August 21, 2026. xShop is an open-source shop developed in Laravel. An Unrestricted File Upload vulnerability in xShop version 3.0.3 allows an authenticated administrator to upload executable files (e.g., .php). By uploading a specially crafted php file, an attacker can achieve Remote Code Execution (RCE) on the…
When was the CVE record for CVE-2026-49849 published?
The CVE record for CVE-2026-49849 was published on August 21, 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 October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-49849 actively exploited?
CVE-2026-49849 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (61st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49849?
CVE-2026-49849 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49849?
A fix for CVE-2026-49849 is available: update to the fixed version the vendor names in its advisory.

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