CVE-2017-1000156

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Mahara 15.04 before 15.04.9 and 15.10 before 15.10.5 and 16.04 before 16.04.3 are vulnerable to a group's configuration page being editable by any group member even when they didn't have the admin role.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
34
EG Risk 34/100CISA SSVC

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
Severity65% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

November 3, 2017

Last Modified

June 17, 2026

References (1)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 26× 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 87 of 151 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. 13 repeat rows among the latest 100 are merged into the row they repeat. The 64 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 19:55 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-09 20:01 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-08 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-10-07 23:40 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-10-07 21:35 UTCOSV refresh
  6. 2026-10-06 15:11 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  7. 2026-10-05 17:38 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-04 23:17 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  9. 2026-10-03 14:21 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  10. 2026-09-30 14:58 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-09-30 09:20 UTCEG score recompute
  12. 2026-09-28 13:45 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-09-27 13:40 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  14. 2026-09-26 15:53 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  15. 2026-09-24 13:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-09-23 13:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  17. 2026-09-20 20:09 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  18. 2026-09-19 15:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  19. 2026-09-18 19:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  20. 2026-09-18 03:50 UTCOSV refresh
  21. 2026-09-17 19:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-09-16 05:05 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-09-15 03:05 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-09-13 16:41 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-09-12 14:55 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 62 more
  1. 2026-09-11 14:46 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-11 09:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-09-10 09:26 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-09-04 13:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-09-02 14:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-09-01 13:48 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-09-01 03:31 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  8. 2026-08-30 04:48 UTCOSV refresh
  9. 2026-08-28 21:35 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  10. 2026-08-27 14:20 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  11. 2026-08-26 14:41 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-08-25 13:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-08-21 23:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-08-19 16:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-08-18 13:43 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-08-17 13:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-08-16 14:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-08-16 02:10 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-08-15 01:25 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-08-13 17:51 UTCOSV refresh
  21. 2026-08-12 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  22. 2026-08-11 13:36 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-08-09 13:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-08-08 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-08-07 16:22 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  26. 2026-08-06 13:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  27. 2026-08-05 19:12 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  28. 2026-08-04 15:05 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  29. 2026-08-02 02:22 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  30. 2026-08-01 04:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  31. 2026-07-30 16:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  32. 2026-07-30 01:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  33. 2026-07-28 22:51 UTCOSV refresh
  34. 2026-07-28 15:31 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  35. 2026-07-26 14:50 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  36. 2026-07-25 14:13 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  37. 2026-07-23 14:15 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  38. 2026-07-23 01:25 UTCEG score recompute
  39. 2026-07-22 22:04 UTCEG score recompute
  40. 2026-07-22 14:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  41. 2026-07-21 15:21 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  42. 2026-07-20 17:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  43. 2026-07-19 14:28 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
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  45. 2026-07-18 10:00 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  46. 2026-07-16 16:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  47. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  48. 2026-07-15 01:56 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  49. 2026-07-13 22:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  50. 2026-07-13 06:09 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  51. 2026-07-12 05:43 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  52. 2026-07-11 15:22 UTCOSV refresh
  53. 2026-07-11 08:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  54. 2026-07-09 19:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  55. 2026-07-08 15:10 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
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  61. 2026-07-01 15:02 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  62. 2026-06-30 23:19 UTCEPSS rescoreEPSS 0.8% · 52nd percentile

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Frequently asked(5)

What is CVE-2017-1000156?
CVE-2017-1000156 is a medium vulnerability published on November 3, 2017. Mahara 15.04 before 15.04.9 and 15.10 before 15.10.5 and 16.04 before 16.04.3 are vulnerable to a group's configuration page being editable by any group member even when they didn't have the admin role.
When was the CVE record for CVE-2017-1000156 published?
The CVE record for CVE-2017-1000156 was published on November 3, 2017. 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-2017-1000156 actively exploited?
CVE-2017-1000156 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-1000156?
CVE-2017-1000156 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2017-1000156?
A fix for CVE-2017-1000156 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

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