CVE-2025-8263VulnerabilityPublished 28 Jul 2025Updated 2 Aug 2025

CVE-2025-8263: prettier

Affects prettierSource CVE Database V5

Not known to be exploited.

Data as of 18 Aug 2025, 01:22 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Jul 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 2026-10-26.

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

AI-suggested

Given the absence of patches or detailed technical guidance, European organizations should proactively monitor official prettier repositories and security advisories for updates addressing CVE-2025-8263. In the interim, organizations should implement network segmentation to limit exposure of development environments to untrusted networks, enforce strict access controls to restrict who can execute prettier processes, and employ runtime monitoring to detect anomalous behavior indicative of exploitation attempts. Incorporating prettier execution within isolated containers or sandboxed environments can reduce the impact of potential exploitation. Additionally, organizations should review and harden CI/CD pipeline security, ensuring that only trusted code and dependencies are used, and consider fallback mechanisms to maintain development continuity if prettier services are disrupted. Regular security training for developers on secure usage of development tools and prompt incident response planning for availability-related incidents are also recommended.

Impact

For European organizations, especially those heavily reliant on modern software development practices and continuous integration pipelines, this vulnerability could disrupt development processes by causing denial of service or operational interruptions in code formatting tasks. This disruption could delay software releases, impact developer productivity, and indirectly affect business operations dependent on timely software updates. Organizations in sectors with stringent compliance and rapid deployment requirements, such as finance, healthcare, and telecommunications, may experience amplified operational risks. While the vulnerability does not directly compromise sensitive data, the availability impact could cascade into broader operational challenges. Additionally, organizations using prettier in automated environments may face increased risk if attackers exploit this vulnerability to interrupt automated workflows, potentially leading to cascading failures in software delivery.

Summary

CVE-2025-8263 is a vulnerability identified in the 'prettier' software product, a widely used code formatting tool popular among developers for maintaining consistent code style. Although the specific technical details and affected versions are not provided, the CVSS 4.0 vector string indicates several key characteristics of the vulnerability: it is remotely exploitable (AV:N), requires low attack complexity (AC:L), does not require user interaction (UI:N), and does not require privileges (PR:L) beyond low-level privileges. The vulnerability impacts the availability of the system (VA:L) but does not affect confidentiality or integrity. The exploitability is partially functional (E:P), meaning that exploitation is possible but may require some conditions or partial success. No known exploits are currently reported in the wild, and no patches or mitigations have been linked yet. Given that prettier is a developer tool often integrated into development environments and CI/CD pipelines, the vulnerability could be exploited remotely to cause denial of service or disruption in development workflows, potentially impacting software delivery and operational continuity. The lack of detailed technical information limits precise understanding, but the vulnerability's characteristics suggest it could be leveraged to degrade service availability without compromising data confidentiality or integrity.

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