CVE-2026-48855

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery.

The SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK returns that absolute path, for example /data/sftp, instead of the chrooted value /.

The information disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it. No file contents, credentials, or access to paths outside the root directory are obtainable through this issue alone.

This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.

This issue affects OTP from OTP 17.0 before OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to ssh from 3.0.1 before 6.0.1, 5.5.2.1 and 5.2.11.8.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated Jun 15, 2026
Patch available. Sources: github_commit, github.
generic

Versions — Erlang System Documentation v29.0.2

https://www.erlang.org/doc/system/versions.html#order-of-versions
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-48855
github Patch Available

SFTP READLINK response leaks absolute backend filesystem path when root is configured · Advisory · erlang/otp · GitHub

https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh
github_commit

commit 8f4224a0d267 (erlang/otp)

Fix landed in erlang/otp commit 8f4224a0d267 — awaiting tagged release

https://github.com/erlang/otp/commit/8f4224a0d2676b0653d2c71a889a956e8c2c62d6
generic

SFTP READLINK Leaks Absolute Backend Filesystem Path When Root Is Configured | Erlang Ecosystem Foundation CNA

https://cna.erlef.org/cves/CVE-2026-48855.html

Vendor Advisories for CVE-2026-48855(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
erlang1:23.2.6+dfsg-1 ... 1:29.0~rc3+dfsg-4 (117 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
erlang1:25.2.3+dfsg-1 ... 1:29.0~rc3+dfsg-4 (78 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1, 1:27.3.4.1+dfsg-1+deb13u1, 1:27.3.4.1+dfsg-1+deb13u21:27.3.4.1+dfsg-1+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1 ... 1:29.0~rc3+dfsg-4 (33 versions)1:29.0.2+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 36× 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 182 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48855?
CVE-2026-48855 is a medium vulnerability published on June 10, 2026. Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery. The SSHFXPREADLINK handler in sshsftpd sends the raw result of file:readlink/2 to the client without calling chrootfilename/2 to strip the backend root prefix. An…
When was CVE-2026-48855 disclosed?
CVE-2026-48855 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48855 actively exploited?
CVE-2026-48855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.9% of all scored CVEs.
What is the CVSS score of CVE-2026-48855?
CVE-2026-48855 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-48855?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48855, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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