CVE-2026-73243

MEDIUMPre-NVD 5.85.8
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (35th 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
5.8EG
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: 0.4%CVSS: 5.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1.

CVSS v3
5.8
EG Score
5.8MEDIUMmedium 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)
Severity58% × 45%
The EG Score, 5.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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: 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
0.4%
EPSS %ILE
35th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

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 yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 11, 2026

Last Modified

September 9, 2026

Advisory Details (5)

Auto-updated Aug 11, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
GitHub advisoryMentions a patch (unverified)

Unauthenticated SSRF via /addTask with fullfilename type-confusion bypass · Advisory · kekingcn/kkFileView · GitHub

https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m
GitHub release Patch Available

5.0.1版本发布 / Release v5.0.1

Patch available: kekingcn/kkFileView v5.0.1

https://github.com/kekingcn/kkFileView/releases/tag/v5.0.1
GitHub pull request Patch Available

fix: protect addTask with trust filters

Patch available: kekingcn/kkFileView v5.0.1 (PR #767 merged 2026-06-24)

https://github.com/kekingcn/kkFileView/pull/767
Web page

[Security] /addTask 端点 SSRF 漏洞 — CVE-2022-43140 修复不完整 · Issue #765 · kekingcn/kkFileView · GitHub

https://github.com/kekingcn/kkFileView/issues/765
GitHub commit Patch Available

commit 32a887aa2cd7 (kekingcn/kkFileView)

Patch available: kekingcn/kkFileView v5.0.1 (contains commit 32a887aa2cd7)

https://github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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 96 of 100 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 4 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-12 15:41 UTCEG score recompute
  4. 2026-10-11 19:26 UTCEG score recompute
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  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-10-06 17:36 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 35th percentile
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  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-09-30 22:00 UTCEG score recompute
  21. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  23. 2026-09-28 12:45 UTCEG score recompute
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-09-27 10:00 UTCEG score recompute
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  1. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-09-25 04:21 UTCEG score recompute
  3. 2026-09-24 02:40 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-09-23 00:59 UTCEG score recompute
  6. 2026-09-21 23:18 UTCEG score recompute
  7. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-09-20 21:36 UTCEG score recompute
  9. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-09-19 19:46 UTCEG score recompute
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-09-18 17:01 UTCEG score recompute
  13. 2026-09-17 13:47 UTCEG score recompute
  14. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-09-16 10:52 UTCEG score recompute
  16. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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  18. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-14 03:39 UTCEG score recompute
  20. 2026-09-13 01:58 UTCEG score recompute
  21. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-09-12 00:17 UTCEG score recompute
  23. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-09-10 22:32 UTCEG score recompute
  25. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  27. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  28. 2026-09-07 16:47 UTCEG score recompute
  29. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  30. 2026-09-06 05:08 UTCEG score recompute
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  32. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  36. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  38. 2026-08-31 12:38 UTCEG score recompute
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  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  42. 2026-08-29 09:00 UTCEG score recompute
  43. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  44. 2026-08-27 22:51 UTCEG score recompute
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  46. 2026-08-26 21:10 UTCEG score recompute
  47. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  48. 2026-08-25 19:23 UTCEG score recompute
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  50. 2026-08-24 17:39 UTCEG score recompute
  51. 2026-08-23 15:58 UTCEG score recompute
  52. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  53. 2026-08-22 14:17 UTCEG score recompute
  54. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  55. 2026-08-21 12:34 UTCEG score recompute
  56. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  57. 2026-08-20 10:49 UTCEG score recompute
  58. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  60. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  61. 2026-08-18 07:27 UTCEG score recompute
  62. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  64. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
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  67. 2026-08-15 02:21 UTCEG score recompute
  68. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  69. 2026-08-14 00:40 UTCEG score recompute
  70. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  71. 2026-08-12 22:59 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73243?
CVE-2026-73243 is a medium-severity vulnerability; its CVE record was published on August 11, 2026. kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an…
When was the CVE record for CVE-2026-73243 published?
The CVE record for CVE-2026-73243 was published on August 11, 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 September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-73243 actively exploited?
CVE-2026-73243 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73243?
CVE-2026-73243 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73243?
A fix for CVE-2026-73243 is available: update to the fixed version the vendor names in its advisory.

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