VulnerabilityPublished 31 Oct 2025

CVE-2025-63561: Summer-Pearl-Group-Slowloris-DoS · Uncontrolled Resource Consumption

Affects Summer-Pearl-Group-Slowloris-DoSSource CVE Database V5

Not known to be exploited · CVSS 7.5 High : upgrade to 1.0.2 soon.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.0.2

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

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

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

Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
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).
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).
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted 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.
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.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 31 Oct 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 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 stolichnayer/Summer-Pearl-Group-Slowloris-DoS to 1.0.2.

Affected software

Product	Affected	Fixed in
GitHubstolichnayer/Summer-Pearl-Group-Slowloris-DoS`pkg:github/stolichnayer/Summer-Pearl-Group-Slowloris-DoS`Other threats	Affected <1.0.2	Fixed in 1.0.2

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

AI-suggested

Organizations should prioritize upgrading the Summer Pearl Group Vacation Rental Management Platform to version 1.0.2 or later once available. In the interim, implementing network-level protections such as rate limiting on incoming HTTP connections can reduce the risk of resource exhaustion. Deploying web application firewalls (WAFs) or intrusion prevention systems (IPS) configured to detect and block Slowloris-style attacks is recommended. Monitoring server connection metrics and setting thresholds to alert on abnormal connection patterns can provide early warning. Additionally, configuring HTTP servers and load balancers to limit the number of simultaneous connections per client IP and to enforce timeouts on incomplete HTTP requests can mitigate exploitation. Network segmentation and redundancy can also help maintain service availability during an attack.

Description

Summer Pearl Group Vacation Rental Management Platform prior to 1.0.2 is susceptible to a Slowloris-style Denial-of-Service (DoS) condition in the HTTP connection handling layer, where an attacker that opens and maintains many slow or partially-completed HTTP connections can exhaust the server’s connection pool and worker capacity, preventing legitimate users and APIs from accessing the service.

Impact

For European organizations using the Summer Pearl Group Vacation Rental Management Platform, this vulnerability could lead to significant service outages, impacting customer experience and operational continuity. The DoS condition could disrupt booking processes, customer management, and API integrations critical to business operations. Given the tourism and hospitality sector's importance in many European economies, especially in countries with high volumes of vacation rentals such as Spain, Italy, France, and Greece, the impact could be economically significant. Additionally, prolonged downtime could damage brand reputation and lead to financial losses. The lack of confidentiality or integrity impact means data breaches are unlikely, but availability loss alone can have severe operational consequences.

CWE-400Uncontrolled Resource Consumption (opens in a new tab)
Class weaknessLikelihood of exploit: High
The product does not properly control the allocation and maintenance of a limited resource.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
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. A strong authentication and access control model will help prevent such attacks from occurring in the first place.
Architecture and Design
Mitigation of resource exhaustion attacks requires that the target system either: recognizes the attack and denies that user further access for a given amount of time, or; uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
OWASP Cheat Sheets
File Upload (opens in a new tab)
OWASP ASVS 4.0.3
V12.1.1 (opens in a new tab)
Attack patterns
XML Ping of the Death (opens in a new tab)
Regular Expression Exponential Blowup (opens in a new tab)
Sustained Client Engagement (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/Stolichnayer/Summer-Pearl-Group-Slowloris-DoS (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 31 Oct 2025, 20:13 UTC

WeaknessesCWE-400

Technical details

References

Community reviews

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