CVE-2026-73194VulnerabilityPublished 23 Sep 2026Updated 31 Oct 2026

Red Hat Security Advisory: perl-DBI security update

Affects Red Hat perl-DBISource GCVE Database

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Authoritative record:CVE-2026-73194· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical : upgrade Red Hat DBI to 1.652 as a priority.

Data as of 31 Oct 2026, 11:08 UTC

CVSS 3.1 base score

9.1Critical

How severe the flaw is on the 0–10 CVSS scale.

Patch: Available – fixed in 1.652

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade DBI to 1.652.

Affected software

Product	Affected	Fixed in
CPANDBI`pkg:cpan/DBI`Other threats	Affected <1.652	Fixed in 1.652

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AI-suggested

Red Hat has released an official security update for perl-DBI in Red Hat Enterprise Linux 10 and related variants. Users should apply the update as described in Red Hat advisory RHSA-2026:70753 to remediate the vulnerability. The vendor manages remediation through these official patches. No additional mitigation steps are indicated beyond applying the update.

Description

A heap out-of-bounds write vulnerability exists in the perl-DBI package due to an unvalidated numeric placeholder. This flaw affects the standard database interface module for Perl and could lead to memory corruption. Red Hat has issued a security update for Red Hat Enterprise Linux 10 to address this issue. The vulnerability is identified as CVE-2026-73194 and is rated with high severity by Red Hat Product Security. No public exploit code or in-the-wild exploitation has been reported. Users of affected Red Hat Enterprise Linux 10 versions should apply the provided updates to mitigate the risk.

Impact

The vulnerability allows a heap out-of-bounds write, which can cause memory corruption. This may lead to application instability or potential exploitation if an attacker can control the numeric placeholder input. The issue affects the perl-DBI module used in database operations within Perl applications. Red Hat rates the impact as Important (high severity). There are no reports of exploitation in the wild or public exploit code currently.

Summary

The perl-DBI package, which provides a database-independent interface module for Perl, contains a heap out-of-bounds write vulnerability triggered by an unvalidated numeric placeholder (CVE-2026-73194). This vulnerability could allow memory corruption, potentially leading to application crashes or other unintended behavior. Red Hat has released an important security update for Red Hat Enterprise Linux 10 and its variants to fix this issue. The advisory references Red Hat Enterprise Linux 10 and its Extended Update Support and Extended Life Cycle versions across multiple architectures including x86_64, s390x, ppc64le, and aarch64. The update is available via Red Hat's errata RHSA-2026:70753. No public exploit or active exploitation is known at this time.

CWE-787Out-of-bounds Write (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #5
The product writes data past the end, or before the beginning, of the intended buffer.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Operation · Build and Compilation · Environment Hardening
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index…
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 31 Oct 2026, 11:08 UTC

WeaknessesCWE-787

Technical details

References

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