CVE-2026-49136

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-01. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Banana Slides through 0.4.0, patched in commit e8bc490, contains a path traversal vulnerability in the generate_image() function within the AI service backend that allows unauthenticated attackers to read arbitrary image-format files outside the intended uploads directory by exploiting an incomplete path prefix check using os.path.startswith() without a trailing separator. Attackers can supply crafted markdown image references in user-controlled page descriptions that resolve to sibling directories whose names share the uploads folder prefix, bypassing the directory confinement check and causing the application to read files from unintended locations via PIL Image.open().

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

Published

June 1, 2026

Last Modified

July 22, 2026

Advisory Details (4)

Auto-updated Jun 6, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

Banana Slides 0.4.0 Path Traversal via generate_image() in ai_service.py | Advisories | VulnCheck

https://www.vulncheck.com/advisories/banana-slides-path-traversal-via-generate-image-in-ai-service-py
github_commit

commit e8bc490ec8b4 (Anionex/banana-slides)

Fix landed in Anionex/banana-slides commit e8bc490ec8b4 — awaiting tagged release

https://github.com/Anionex/banana-slides/commit/e8bc490ec8b4b657e07dc3ab4e94fbedcaade421
github_pr

fix(security): block sibling-prefix path traversal in /files image refs

Fix merged in Anionex/banana-slides PR #430 on 2026-05-31 — awaiting tagged release

https://github.com/Anionex/banana-slides/pull/430
generic

banana-slides Path Traversal via Missing Trailing Separator in startswith() Check · Issue #429 · Anionex/banana-slides · GitHub

https://github.com/Anionex/banana-slides/issues/429

Vendor Advisories for CVE-2026-49136(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 261 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 13:39 UTCOSV refresh
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-26 00:27 UTCEPSS rescore
  15. 2026-09-23 17:53 UTCEPSS rescore
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-14 06:06 UTCEG score recompute
  21. 2026-09-14 06:06 UTCGHSA enrichment
  22. 2026-09-13 16:47 UTCEPSS rescore
  23. 2026-09-13 00:06 UTCOSV refresh
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-10 09:35 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 22:01 UTCEPSS rescore
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 13:47 UTCEPSS rescore
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-02 14:12 UTCEPSS rescore
  6. 2026-09-01 13:54 UTCEPSS rescore
  7. 2026-09-01 04:40 UTCEPSS rescore
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-26 14:46 UTCEPSS rescore
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-25 03:51 UTCEG score recompute
  15. 2026-08-25 03:51 UTCGHSA enrichment
  16. 2026-08-23 13:50 UTCEG score recompute
  17. 2026-08-23 13:50 UTCGHSA enrichment
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-22 01:58 UTCEG score recompute
  20. 2026-08-22 01:58 UTCGHSA enrichment
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 14:50 UTCEG score recompute
  23. 2026-08-21 14:50 UTCGHSA enrichment
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-20 21:24 UTCGHSA enrichment
  26. 2026-08-20 10:16 UTCEG score recompute
  27. 2026-08-20 10:16 UTCGHSA enrichment
  28. 2026-08-19 17:04 UTCEPSS rescore
  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 13:47 UTCEPSS rescore
  31. 2026-08-17 04:45 UTCGHSA enrichment
  32. 2026-08-16 15:00 UTCEG score recompute
  33. 2026-08-16 15:00 UTCGHSA enrichment
  34. 2026-08-16 14:56 UTCEPSS rescore
  35. 2026-08-16 02:27 UTCEG score recompute
  36. 2026-08-16 02:27 UTCGHSA enrichment
  37. 2026-08-16 02:14 UTCEPSS rescore
  38. 2026-08-15 15:20 UTCEG score recompute
  39. 2026-08-15 15:20 UTCGHSA enrichment
  40. 2026-08-15 01:30 UTCEPSS rescore
  41. 2026-08-14 21:34 UTCGHSA enrichment
  42. 2026-08-14 10:27 UTCGHSA enrichment
  43. 2026-08-13 23:20 UTCEG score recompute
  44. 2026-08-13 23:20 UTCGHSA enrichment
  45. 2026-08-13 22:00 UTCEPSS rescore
  46. 2026-08-13 07:59 UTCGHSA enrichment
  47. 2026-08-12 20:01 UTCEG score recompute
  48. 2026-08-12 20:01 UTCGHSA enrichment
  49. 2026-08-12 13:51 UTCEPSS rescore
  50. 2026-08-12 08:54 UTCGHSA enrichment
  51. 2026-08-11 21:29 UTCEG score recompute
  52. 2026-08-11 21:29 UTCGHSA enrichment
  53. 2026-08-11 10:22 UTCEG score recompute
  54. 2026-08-11 10:22 UTCGHSA enrichment
  55. 2026-08-11 00:00 UTCEPSS rescore
  56. 2026-08-10 23:14 UTCGHSA enrichment
  57. 2026-08-10 12:07 UTCGHSA enrichment
  58. 2026-08-10 00:55 UTCGHSA enrichment
  59. 2026-08-09 13:49 UTCEG score recompute
  60. 2026-08-09 13:49 UTCGHSA enrichment
  61. 2026-08-09 13:46 UTCEPSS rescore
  62. 2026-08-09 02:42 UTCEG score recompute
  63. 2026-08-09 02:42 UTCGHSA enrichment
  64. 2026-08-08 16:37 UTCEPSS rescore
  65. 2026-08-08 15:35 UTCGHSA enrichment
  66. 2026-08-08 04:15 UTCGHSA enrichment
  67. 2026-08-07 17:08 UTCEG score recompute
  68. 2026-08-07 17:08 UTCGHSA enrichment
  69. 2026-08-07 06:01 UTCGHSA enrichment
  70. 2026-08-06 18:53 UTCEG score recompute
  71. 2026-08-06 18:53 UTCGHSA enrichment
  72. 2026-08-06 13:47 UTCEPSS rescore
  73. 2026-08-06 07:46 UTCGHSA enrichment
  74. 2026-08-05 20:39 UTCEG score recompute
  75. 2026-08-05 20:39 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-49136?
CVE-2026-49136 is a high vulnerability published on June 1, 2026. Banana Slides through 0.4.0, patched in commit e8bc490, contains a path traversal vulnerability in the generate_image() function within the AI service backend that allows unauthenticated attackers to read arbitrary image-format files outside the intended uploads directory by exploiting an…
When was CVE-2026-49136 disclosed?
CVE-2026-49136 was first published on June 1, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49136 actively exploited?
CVE-2026-49136 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49136?
CVE-2026-49136 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49136?
An upstream fix for CVE-2026-49136 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-49136 are linked in the Vendor Advisories panel on this page.

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