Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-53422

Erlang/OTP Vulnerability in NetApp Products

CVE-2026-53422: Erlang/OTP Vulnerability in NetApp Products. Not in the CISA KEV catalog. Medium advisory severity (CVSS 4.3, NetApp).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-53422 key facts

CISA KEV: Not listed (catalog checked Nov 5, 2026)
Highest advisory severity: Medium
CVSS base score: 4.3 (NetApp), 4.3 (Red Hat)
Fixed releases: Red Hat: erlang27-main-27.3.4.14-1.hum1, RHSA-2026:35998
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Jul 13, 2026 · Updated Nov 4, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-53422; bulletin-wide values are not repeated here.

Is CVE-2026-53422 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-53422 is not in the CISA KEV catalog (checked Nov 5, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-53422?

Upgrade to a fixed release named by the vendor:

Red Hat: erlang27-main-27.3.4.14-1.hum1, RHSA-2026:35998

Vendor advisory comparison

NetApp

1 advisory

Advisory severityMedium4.3
Medium [CVE-2026-53422] Erlang/OTP Vulnerability in NetApp Products
NTAP-20261104-0019Source published Nov 4, 2026Source updated Nov 4, 2026
Erlang/OTP versions 17 through 27.3.4.13, 28 through 28.5.0.2, and 29 through 29.0.2 are susceptible to a vulnerability which when successfully exploited could allow an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. Successful exploitation of this vulnerability could lead to disclosure of sensitive information. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.
Affected products in this advisory
No product details extracted. Check the source bulletin.
Source-reported affected versions
27.3.4.13
28.5.0.2
29.0.2
Source-reported fixed versions
No fixed-version detail extracted. This does not mean no fix exists.
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityMedium4.3
Medium [CVE-2026-53422] Erlang OTP ssh: Information disclosure via SFTP REALPATH handler
CVE-2026-53422Source published Jul 2, 2026Source updated Jul 2, 2026
Observable Response Discrepancy vulnerability in Erlang OTP ssh (ssh_sftpd module) allows an authenticated SFTP user to enumerate the existence of files and directories outside the configured root directory. The SSH_FXP_REALPATH handler in ssh_sftpd calls relate_file_name/3 with Canonicalize=false, unlike every other SFTP operation handler. This allows.. components in the requested path to bypass the is_within_root/2 check without being resolved. The un-canonicalized path then enters resolve_symlinks/2, which walks up the directory tree above the configured root and issues read_link() syscalls on arbitrary filesystem paths. An authenticated SFTP client can exploit this by sending a REALPATH request with a crafted traversal path. The server response differs depending on whether the target…
Affected products in this advisory
Red Hat Hardened Images
Red Hat OpenStack Platform 16.2
Red Hat OpenStack Platform 17.1
Red Hat OpenStack Platform 18.0
Source-reported affected versions
< 17.0
< 29.0.3
< 28.5.0.3
< 27.3.4.14
4 more entries in the full advisory.
Source-reported fixed versions
erlang27-main-27.3.4.14-1.hum1
RHSA-2026:35998
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

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