CVE-2026-58198

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (1st 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
5.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (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: 0.1%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract() uses a predictable home-rooted output directory (~/ubuntu_data/ubuntu_dialogs) with a check-then-create pattern followed by tar.extractall(path=self.data_path), allowing a local attacker who pre-plants a symlink at the predictable path to cause archive contents to be written through the symlink to an attacker-chosen directory. This issue is fixed in version 1.2.14.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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)
Severity55% × 45%
The EG Score, 5.5 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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
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 public PoC (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 9, 2026

Last Modified

July 9, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Symlink-Following Arbitrary Write via UbuntuCorpusTrainer in ChatterBot · Advisory · gunthercox/ChatterBot · GitHub

https://github.com/gunthercox/ChatterBot/security/advisories/GHSA-wvrh-2f4m-924v
GitHub release Patch Available

1.2.14

Patch available: gunthercox/ChatterBot 1.2.14

https://github.com/gunthercox/ChatterBot/releases/tag/1.2.14
GitHub pull request Patch Available

Guard against symlinks in training data paths

Patch available: gunthercox/ChatterBot 1.2.14 (PR #2445 merged 2026-06-19)

https://github.com/gunthercox/ChatterBot/pull/2445
GitHub commit Patch Available

commit 82817b5c28bf (gunthercox/ChatterBot)

Patch available: gunthercox/ChatterBot 1.2.14 (contains commit 82817b5c28bf)

https://github.com/gunthercox/ChatterBot/commit/82817b5c28bfd43e682b991bcc76e6f780726dbf

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
chatterbot0.0.0 ... 1.2.9 (94 versions)
  • every version up to 1.2.14: fixed in 1.2.14
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 35× 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 99 of 126 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 27 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 0.1% · 1st percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-12 15:53 UTCEG score recompute
  4. 2026-10-11 19:36 UTCEG score recompute
  5. 2026-10-11 16:52 UTCEG score recompute
  6. 2026-10-11 14:14 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-10-01 16:01 UTCEG score recompute
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-09-28 10:27 UTCEG score recompute
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 74 more
  1. 2026-09-24 11:24 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-09-23 05:54 UTCEG score recompute
  4. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-09-18 05:35 UTCEG score recompute
  7. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-09-14 07:30 UTCEG score recompute
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-09-13 08:18 UTCEG score recompute
  14. 2026-09-12 03:22 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-09-05 22:34 UTCEG score recompute
  21. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-08-30 06:44 UTCEG score recompute
  27. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-08-28 02:41 UTCEG score recompute
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  31. 2026-08-26 03:49 UTCEG score recompute
  32. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  33. 2026-08-24 21:44 UTCEG score recompute
  34. 2026-08-23 22:32 UTCEG score recompute
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  36. 2026-08-22 00:07 UTCEG score recompute
  37. 2026-08-21 23:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  38. 2026-08-21 00:54 UTCEG score recompute
  39. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  40. 2026-08-18 22:26 UTCEG score recompute
  41. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  42. 2026-08-17 22:16 UTCEG score recompute
  43. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  44. 2026-08-16 21:58 UTCEG score recompute
  45. 2026-08-16 14:56 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  46. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  47. 2026-08-15 22:46 UTCEG score recompute
  48. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  49. 2026-08-14 00:22 UTCEG score recompute
  50. 2026-08-13 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  51. 2026-08-13 01:10 UTCEG score recompute
  52. 2026-08-12 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  53. 2026-08-12 01:58 UTCEG score recompute
  54. 2026-08-09 04:21 UTCEG score recompute
  55. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  56. 2026-08-08 05:09 UTCEG score recompute
  57. 2026-08-07 05:57 UTCEG score recompute
  58. 2026-08-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  59. 2026-08-06 06:45 UTCEG score recompute
  60. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  61. 2026-08-05 07:33 UTCEG score recompute
  62. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-08-04 08:17 UTCEG score recompute
  64. 2026-08-03 10:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  65. 2026-08-01 09:14 UTCEG score recompute
  66. 2026-08-01 04:16 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  67. 2026-07-31 10:02 UTCEG score recompute
  68. 2026-07-30 16:28 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  69. 2026-07-30 10:47 UTCEG score recompute
  70. 2026-07-30 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  71. 2026-07-29 11:33 UTCEG score recompute
  72. 2026-07-28 15:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  73. 2026-07-28 12:18 UTCEG score recompute
  74. 2026-07-27 14:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile

Related CVEs(same product + same CWE)

Same product

1 shown

PyPI:chatterbot

Frequently asked(5)

What is CVE-2026-58198?
CVE-2026-58198 is a medium-severity vulnerability; its CVE record was published on July 9, 2026. ChatterBot is a machine learning, conversational dialog engine for creating chat bots. Prior to 1.2.14, UbuntuCorpusTrainer.extract() uses a predictable home-rooted output directory (~/ubuntudata/ubuntudialogs) with a check-then-create pattern followed by tar.extractall(path=self.data_path),…
When was the CVE record for CVE-2026-58198 published?
The CVE record for CVE-2026-58198 was published on July 9, 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 9, 2026; the record at its source may have been updated since.
Is CVE-2026-58198 actively exploited?
CVE-2026-58198 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58198?
CVE-2026-58198 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58198?
A fix for CVE-2026-58198 is available: update to the fixed version the vendor names in its advisory.

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