CVE-2026-41309 (GCVE-0-2026-41309)
Vulnerability from cvelistv5 – Published: 2026-04-24 02:31 – Updated: 2026-04-24 18:17
VLAI?
Title
Open Source Social Network (OSSN) Vulnerable to Resource Exhaustion via Malicious Image Processing
Summary
Open Source Social Network (OSSN) is open-source social networking software developed in PHP. Versions prior to 9.0 are vulnerable to resource exhaustion. An attacker can upload a specially crafted image with extreme pixel dimensions (e.g., $10000 \times 10000$ pixels). While the compressed file size on disk may be small, the server attempts to allocate significant memory and CPU cycles during the decompression and resizing process, leading to a Denial of Service (DoS) condition. It is highly recommended to upgrade to OSSN 9.0. This version introduces stricter validation of image dimensions and improved resource management during the processing phase. Those who cannot upgrade immediately can mitigate the risk by adjusting their `php.ini` settings to strictly limit `memory_limit` and `max_execution_time` and/or implementing a client-side and server-side check on image headers to reject files exceeding reasonable pixel dimensions (e.g., $4000 \times 4000$ pixels) before processing begins.
Severity ?
8.2 (High)
CWE
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| opensource-socialnetwork | opensource-socialnetwork |
Affected:
< 9.0
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-41309",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-24T17:22:06.726940Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-24T18:17:55.864Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "opensource-socialnetwork",
"vendor": "opensource-socialnetwork",
"versions": [
{
"status": "affected",
"version": "\u003c 9.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Open Source Social Network (OSSN) is open-source social networking software developed in PHP. Versions prior to 9.0 are vulnerable to resource exhaustion. An attacker can upload a specially crafted image with extreme pixel dimensions (e.g., $10000 \\times 10000$ pixels). While the compressed file size on disk may be small, the server attempts to allocate significant memory and CPU cycles during the decompression and resizing process, leading to a Denial of Service (DoS) condition. It is highly recommended to upgrade to OSSN 9.0. This version introduces stricter validation of image dimensions and improved resource management during the processing phase. Those who cannot upgrade immediately can mitigate the risk by adjusting their `php.ini` settings to strictly limit `memory_limit` and `max_execution_time` and/or implementing a client-side and server-side check on image headers to reject files exceeding reasonable pixel dimensions (e.g., $4000 \\times 4000$ pixels) before processing begins."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-24T02:31:52.915Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2"
},
{
"name": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535"
},
{
"name": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117"
}
],
"source": {
"advisory": "GHSA-72qf-xrcw-fhr2",
"discovery": "UNKNOWN"
},
"title": "Open Source Social Network (OSSN) Vulnerable to Resource Exhaustion via Malicious Image Processing"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-41309",
"datePublished": "2026-04-24T02:31:52.915Z",
"dateReserved": "2026-04-20T14:01:46.670Z",
"dateUpdated": "2026-04-24T18:17:55.864Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-41309",
"date": "2026-04-25",
"epss": "0.00057",
"percentile": "0.17657"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-41309\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-04-24T03:16:11.720\",\"lastModified\":\"2026-04-24T14:50:56.203\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Open Source Social Network (OSSN) is open-source social networking software developed in PHP. Versions prior to 9.0 are vulnerable to resource exhaustion. An attacker can upload a specially crafted image with extreme pixel dimensions (e.g., $10000 \\\\times 10000$ pixels). While the compressed file size on disk may be small, the server attempts to allocate significant memory and CPU cycles during the decompression and resizing process, leading to a Denial of Service (DoS) condition. It is highly recommended to upgrade to OSSN 9.0. This version introduces stricter validation of image dimensions and improved resource management during the processing phase. Those who cannot upgrade immediately can mitigate the risk by adjusting their `php.ini` settings to strictly limit `memory_limit` and `max_execution_time` and/or implementing a client-side and server-side check on image headers to reject files exceeding reasonable pixel dimensions (e.g., $4000 \\\\times 4000$ pixels) before processing begins.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"},{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2\",\"source\":\"security-advisories@github.com\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-41309\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-24T17:22:06.726940Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-24T17:22:12.195Z\"}}], \"cna\": {\"title\": \"Open Source Social Network (OSSN) Vulnerable to Resource Exhaustion via Malicious Image Processing\", \"source\": {\"advisory\": \"GHSA-72qf-xrcw-fhr2\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"opensource-socialnetwork\", \"product\": \"opensource-socialnetwork\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 9.0\"}]}], \"references\": [{\"url\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2\", \"name\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/security/advisories/GHSA-72qf-xrcw-fhr2\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535\", \"name\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/issues/2535\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117\", \"name\": \"https://github.com/opensource-socialnetwork/opensource-socialnetwork/commit/12357113b3be189da7f6e429979a464e4f982117\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Open Source Social Network (OSSN) is open-source social networking software developed in PHP. Versions prior to 9.0 are vulnerable to resource exhaustion. An attacker can upload a specially crafted image with extreme pixel dimensions (e.g., $10000 \\\\times 10000$ pixels). While the compressed file size on disk may be small, the server attempts to allocate significant memory and CPU cycles during the decompression and resizing process, leading to a Denial of Service (DoS) condition. It is highly recommended to upgrade to OSSN 9.0. This version introduces stricter validation of image dimensions and improved resource management during the processing phase. Those who cannot upgrade immediately can mitigate the risk by adjusting their `php.ini` settings to strictly limit `memory_limit` and `max_execution_time` and/or implementing a client-side and server-side check on image headers to reject files exceeding reasonable pixel dimensions (e.g., $4000 \\\\times 4000$ pixels) before processing begins.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770: Allocation of Resources Without Limits or Throttling\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400: Uncontrolled Resource Consumption\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-04-24T02:31:52.915Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-41309\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-24T18:17:55.864Z\", \"dateReserved\": \"2026-04-20T14:01:46.670Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-04-24T02:31:52.915Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…