CVE-2025-9624: amazon opensearch Uncontrolled Recursion
CVSS: 8.3v4.0HighModified
AliasesUBUNTU-CVE-2025-9624CGA-8v3m-vchj-7jp8CGA-fx65-whm4-729mCGA-22q7-qhf4-27ffCGA-289p-q7m8-mwwwCGA-3chh-hfv5-c5rqCGA-3rv4-mmvg-q7h5CGA-3w25-hprf-f7pxCGA-47vq-rvg3-7w45CGA-49rg-q83q-46w6CGA-4h68-85xf-84f4CGA-4wgf-vw4f-p8h2CGA-54mg-ppr5-c5rmCGA-56vm-2r4m-mcwpCGA-574h-j27h-q6jmCGA-578v-c8hp-q84pCGA-58vr-f934-jx72CGA-5c27-fxj2-p98mCGA-5pgx-wvw4-33jmCGA-5r7w-59gq-cgh4CGA-63qm-cmhf-xf2fCGA-64x9-r8fw-xwpmCGA-66h2-m6ww-7h8rCGA-6chm-vxv9-6wwqCGA-6q87-q6p5-476mCGA-6wmj-x9f3-mjvjCGA-73rf-jjxx-3vchCGA-78qv-h3xw-5xcpCGA-88jr-w62c-m6qhCGA-893h-mxr9-722fCGA-8gr5-63w3-783hCGA-8p27-wjmj-qrcxCGA-99pf-5q95-rf3rCGA-9ppf-6mw3-w85pCGA-c3jf-j529-2cwvCGA-c428-72fq-p3jrCGA-cfvw-75q3-hr3wCGA-cxc8-x7fp-chvvCGA-f7pj-492p-3853CGA-fj7q-44hg-7gwfCGA-fmgx-rqmr-qj95CGA-fr44-j883-6w7mCGA-fwj7-7w53-x362CGA-g65w-q7hx-7c2xCGA-g7pg-286p-hh2fCGA-hf26-crm9-mpvvCGA-hh7j-54p9-vm2gCGA-j4g7-mgcj-cpj3CGA-j7hm-wg8p-v485CGA-jh4r-j3jc-rmp9CGA-jv6p-gg69-6pvqCGA-m4fc-c4w6-gv33CGA-m8vh-4x2q-w93mCGA-mhm6-6mr2-2ff5CGA-mr2g-qhqw-47q2CGA-mx25-3gj2-gjfgCGA-p3fv-xr55-mprqCGA-pp55-rjwh-6x3cGHSA-mw3v-mmfw-3x2gCGA-qhgv-3mhv-87fcCGA-qr6p-5rfj-98cgCGA-qxq7-fj3m-pf64CGA-qxxv-qjv9-rh8jCGA-rg7m-m486-q656CGA-rh5g-436f-3rvwCGA-rmrf-h2xv-6fwvCGA-rwf6-fm2h-fqwfCGA-v358-fgqv-vc3jCGA-v7gw-pmw6-r3xhCGA-vcq9-r6w3-ww9pCGA-vvvv-732p-vr95CGA-vww7-ppcj-2wvpCGA-w4mv-cw2c-vrrrCGA-w7r3-xcf8-jfxfCGA-w88h-gj68-26jrCGA-wc4g-gv9w-fj2xCGA-wh85-v657-56g2CGA-wmc4-p7q7-v5vhCGA-wmxf-72p9-9c7rCGA-wqw8-cxvm-r467CGA-wx22-6336-xmppCGA-wx39-3gv6-fwq4CGA-xr74-f3v7-982pCGA-xvwf-g984-cc83CGA-xw32-vj3g-j38j
Published 25-11-2025Last modified 15-12-2025
Vulnerability summary
CVE-2025-9624 is a high (CVSS 8.3) Uncontrolled Recursion vulnerability in amazon opensearch. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.3/10
010
High · v4.0 (CVE.org)EPSS score
0.68%
0%100%
Low · +0.17 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 25-11-2025PublishedVulnerability first disclosed.
- 15-12-2025Last modifiedVulnerability information updated.
Description
A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs. This issue affects all OpenSearch versions between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.
CVSS metrics
8 scores · 6 sources · 2 versionsHigh 8.3Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated8.3HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- OSV · WolfiEcosystem advisory · calculated8.3HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- OSV · ChainguardEcosystem advisory · calculated8.3HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- OSV · MavenEcosystem advisory · calculated8.3HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
- NVDNIST8.3HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
High 7.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.68%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
+0.17 pp
From 0.51% on 18-09-2026
18-09-202618-10-2026
EPSS score0.68%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (fluidattacks.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Chainguard42 products
- opensearch-2< 2.19.4-r0
- opensearch-2-alerting< 2.19.4-r0
- opensearch-2-analysis-icu< 2.19.4-r0
- opensearch-2-analysis-kuromoji< 2.19.4-r0
- opensearch-2-analysis-nori< 2.19.4-r0
Amazon1 product
- opensearch< 3.3.0
Opensearch1 product
- opensearch≥ 3.0.0, < 3.3.0 | ≥ 1.0.0, < 2.19.4
Org.opensearch1 product
- opensearch-common≥ 3.0.0, < 3.3.0 | < 2.19.4
Ubuntu1 product
- opensearchAll versions (No fix recorded)
Wolfi1 product
- opensearch-2< 2.19.4-r0
6 vendors · 47 products
