Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-15588

GLib Vulnerability in NetApp Products

CVE-2026-15588: GLib Vulnerability in NetApp Products. Not in the CISA KEV catalog. Medium advisory severity (CVSS 5.3, 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-2026-15588 key facts

CISA KEV: Not listed (catalog checked Nov 6, 2026)
Highest advisory severity: Medium
CVSS base score: 5.3 (NetApp), 5.3 (Red Hat)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L (Red Hat)
Weakness: CWE-770
Fixed releases: Red Hat: glib2-0:2.80.4-12.el10_2.21, glib2-0:2.80.4-4.el10_0.17, glib2-0:2.56.1-13.el7_9.1, glib2-0:2.56.4-177.el8_10, glib2-0:2.56.4-10.el8_4.7, glib2-0:2.56.4-158.el8_6.7 and 44 more in the advisory
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Jul 20, 2026 · Updated Oct 2, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-15588; bulletin-wide values are not repeated here.

Is CVE-2026-15588 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-15588 is not in the CISA KEV catalog (checked Nov 6, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-15588?

Upgrade to a fixed release named by the vendor:

Red Hat: glib2-0:2.80.4-12.el10_2.21, glib2-0:2.80.4-4.el10_0.17, glib2-0:2.56.1-13.el7_9.1, glib2-0:2.56.4-177.el8_10, glib2-0:2.56.4-10.el8_4.7, glib2-0:2.56.4-158.el8_6.7

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (Red Hat)

Vendor advisory comparison

NetApp

1 advisory

Advisory severityMedium5.3
Medium [CVE-2026-15588] GLib Vulnerability in NetApp Products
NTAP-20260924-0030Source published Sep 24, 2026Source updated Oct 2, 2026
GLib versions through 2.88.2 and 2.89 through 2.89.1 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data or Denial of Service (DoS). 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
2.88.2
2.89
2.89.1
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 severityMedium5.3
Medium [CVE-2026-15588] GDBusServer pre-authentication DoS via unbounded SASL line buffering
CVE-2026-15588Source published Jul 20, 2026Source updated Jul 12, 2026
A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang. A local or remote unauthenticated attacker could send an engineered stream of data without line length limitations during the authentication process (`gdbusauth`), leading to excessive memory allocation and CPU consumption. This resource exhaustion can result in a denial-of-service (DoS) condition, causing applications…
Affected products in this advisory
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
26 more entries in the full advisory.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
glib2-0:2.80.4-12.el10_2.21
glib2-0:2.80.4-4.el10_0.17
glib2-0:2.56.1-13.el7_9.1
glib2-0:2.56.4-177.el8_10
46 more entries in the full advisory.
Mitigation guidance
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Full advisory and evidence Open source bulletin

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