CVE-2025-13836VulnerabilityPublished 5 Mar 2026Updated 8 Oct 2026

SUSE · security update for python3.12

Affects SUSESource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2025-13836· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium · fixed in SUSE package updates : update SUSE when convenient.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 4.0 base score

6.3Medium

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

EPSS: 1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.14.1, 3.13.11, 3.12.13 +2

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
Bitnamipython`pkg:bitnami/python`Other threats	Affected <3.10.20 >=3.11.0 <3.11.15 >=3.12.0 <3.12.13 >=3.13.0 <3.13.11 >=3.14.0 <3.14.1	Fixed in 3.10.20 3.11.15 3.12.13 3.13.11 3.14.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released an official security update for python3.12 packages that addresses this vulnerability. Users of affected Red Hat Enterprise Linux 9.6 Extended Update Support and related variants should apply the python3.12 update to version 3.12.9-1.el9_6.5 or later as provided by Red Hat. Refer to Red Hat article https://access.redhat.com/articles/11258 for update instructions. No additional mitigation is required beyond applying the official patch.

Description

This update for salt fixes the following issues: Changes in salt: - Security issues fixed: * CVE-2025-67724: fixed missing validation of supplied reason phrase (bsc#1254903) * CVE-2025-67725: fixed DoS via malicious HTTP request (bsc#1254905) * CVE-2025-67726: fixed HTTP header parameter parsing algorithm (bsc#1254904) - Fixed KeyError in postgres module with PostgreSQL 17 (bsc#1254325) - Use internal deb classes instead of external aptsource lib - Improved performance of wheel key.finger call (bsc#1240532) - Improved performance of utils.find_json function (bsc#1246130) - Extend warn_until period to 2027

Impact

Successful exploitation of this vulnerability could cause a denial of service by exhausting resources through excessive read buffering in the http.client module of Python 3.12. This could disrupt applications or services relying on this Python version. There are no known exploits in the wild at this time. The impact is rated moderate by Red Hat Product Security.

Summary

The vulnerability CVE-2025-13836 involves excessive read buffering in the cpython http.client module, which can lead to a denial of service condition. This issue is addressed by Red Hat in an update to python3.12 packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related product variants. The advisory rates the security impact as moderate. No CVSS score is provided in the advisory. The fix is included in python3.12 version 3.12.9-1.el9_6.5 packages. The vulnerability relates to improper resource allocation (CWE-770) that could be exploited to cause service disruption.

CWE-770Allocation of Resources Without Limits or Throttling (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #25
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Requirements
Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
Architecture and Design
Limit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.
Architecture and Design
Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
OWASP ASVS 4.0.3
V8.1.4 (opens in a new tab)
V13.4.1 (opens in a new tab)
V11.1.4 (opens in a new tab)
Attack patterns
XML Ping of the Death (opens in a new tab)
Exponential Data Expansion (opens in a new tab)
Serialized Data Parameter Blowup (opens in a new tab)
Serialized Data with Nested Payloads (opens in a new tab)
Oversized Serialized Data Payloads (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 25 Jun 2026, 21:55 UTC

WeaknessesCWE-770

Technical details

References

Community reviews

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