Apache HTTP Server up to 2.4.53 r:wsread information disclosure

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.3 | $0-$5k | 0.00 |
Summary
A vulnerability has been found in Apache HTTP Server up to 2.4.53 and classified as problematic. This affects the function r:wsread. The manipulation leads to information disclosure.
This vulnerability is listed as CVE-2022-30556. The attack may be initiated remotely. There is no available exploit.
The affected component should be upgraded.
Details
A vulnerability was found in Apache HTTP Server up to 2.4.53 (Web Server) and classified as problematic. This issue affects the function r:wsread. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.
The weakness was presented 06/09/2022. The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2022-30556 since 05/11/2022. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 247826 (TencentOS Server 2: httpd (TSSA-2025:0526)), which helps to determine the existence of the flaw in a target environment.
Upgrading to version 2.4.54 eliminates this vulnerability. The upgrade is hosted for download at httpd.apache.org.
The vulnerability is also documented in the vulnerability database at Tenable (247826). If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Type
Vendor
Name
Version
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.5
- 2.4.6
- 2.4.7
- 2.4.8
- 2.4.9
- 2.4.10
- 2.4.11
- 2.4.12
- 2.4.13
- 2.4.14
- 2.4.15
- 2.4.16
- 2.4.17
- 2.4.18
- 2.4.19
- 2.4.20
- 2.4.21
- 2.4.22
- 2.4.23
- 2.4.24
- 2.4.25
- 2.4.26
- 2.4.27
- 2.4.28
- 2.4.29
- 2.4.30
- 2.4.31
- 2.4.32
- 2.4.33
- 2.4.34
- 2.4.35
- 2.4.36
- 2.4.37
- 2.4.38
- 2.4.39
- 2.4.40
- 2.4.41
- 2.4.42
- 2.4.43
- 2.4.44
- 2.4.45
- 2.4.46
- 2.4.47
- 2.4.48
- 2.4.49
- 2.4.50
- 2.4.51
- 2.4.52
- 2.4.53
License
Website
- Vendor: https://www.apache.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 247826
Nessus Name: TencentOS Server 2: httpd (TSSA-2025:0526)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: HTTP Server 2.4.54
Timeline
05/11/2022 🔍06/09/2022 🔍
06/09/2022 🔍
08/11/2025 🔍
Sources
Vendor: apache.orgAdvisory: openwall.com
Status: Confirmed
CVE: CVE-2022-30556 (🔍)
GCVE (CVE): GCVE-0-2022-30556
GCVE (VulDB): GCVE-100-201533
Entry
Created: 06/09/2022 23:24Updated: 08/11/2025 23:23
Changes: 06/09/2022 23:24 (41), 06/11/2022 14:22 (1), 05/01/2025 20:18 (33), 08/11/2025 23:23 (2)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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