CVE-2025-30343Public exploitNetwork attack vector

File overwrite via unsanitized ZIP entry paths

Published Mar 21, 2025 · Updated Mar 21, 2025

Path traversal in OpenSlides before 4.2.5 allows remote authenticated users to create ZIP archives that write outside extraction folders. ZIP export uses attacker-controlled file or folder titles as archive entry paths without removing absolute or relative path separators. A victim must download and extract the archive with a tool that honors those paths, after which files outside the chosen directory can be overwritten.

CVSS severity3.0
Low
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in OpenSlides before 4.2.5 allows remote authenticated users to create ZIP archives that write outside extraction folders. ZIP export uses attacker-controlled file or folder titles as archive entry paths without removing absolute or relative path separators. A victim must download and extract the archive with a tool that honors those paths, after which files outside the chosen directory can be overwritten.

The record

CVE
CVE-2025-30343
Published
Mar 21, 2025
Updated
Mar 21, 2025
Vendor
Intevation
Product
OpenSlides
Classifications
CWE-22, CWE-24, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Intevation · OpenSlidesversion=0 <4.2.5

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.0MITRECVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N
2.6X41 D-SecCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-24Path Traversal: '../filedir'
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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