Trending
CVE-2026-0864

CVE detail

CVE-2026-0864

When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.

CVSS 4.1 · MediumBuzz score 37.0

Buzz score

Why this CVE is surfacing

Buzz score total 37.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 22.0 · diversity 15.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

22.0

8 evidence mentions in the snapshot

Diversity score

15.0

3 sources across 3 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 1; within the 30d window
Peak daily: 1; highest bucket

Evidence

Source links by recency

Newest mentions first

8 source links · newest first

CVE-2026-0864 Configuration Injection via Carriage Return (\r) in write() methodMicrosoft MSRC
Information published.
vendormsrc.microsoft.comJun 28, 2026, 9:05 AM
https://mail.python.org/archives/list/[email protected]/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/mail.python.org
No excerpt available.
Vendor Advisorymail.python.orgJun 23, 2026, 6:17 PM
https://github.com/python/cpython/pull/151559github.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM
https://github.com/python/cpython/issues/143927github.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM
https://github.com/python/cpython/commit/aaf850fd333cd89e9aada03d92aaa788a6cb1bb8github.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM
https://github.com/python/cpython/commit/71f2e02a52d47417a6fd69f456346cd8aa7aca98github.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM
https://github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851fgithub.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM
https://github.com/python/cpython/commit/0adb386f6e68eb2e73d32e19f235d012df009528github.com
No excerpt available.
Exploitgithub.comJun 23, 2026, 6:17 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-0864.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

Product query unavailableNo valid raw CPE 2.3 product record is available for this CVE, so no product-level Shodan query is shown.

Exact CVE query

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Metadata

Canonical fields

NVD status

Awaiting Analysis

Published

Jun 23, 2026

Modified

Jul 23, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE IDs

Vendor classifications

Unavailable

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Local. The attacker needs local access to the vulnerable system.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): Present. A prerequisite deployment or execution condition must be present.
Privileges Required (PR): High. The attacker needs significant administrative privileges.
User Interaction (UI): Passive. A targeted user must unknowingly interact with the vulnerable system.
Vulnerable System Confidentiality (VC): None. There is no direct impact to this security property.
Vulnerable System Integrity (VI): High. There is a total or serious impact to this security property.
Vulnerable System Availability (VA): None. There is no direct impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses