CVE-2026-27880: OpenFeature evaluation API reads input data with no bounds
Modified
AliasesUBUNTU-CVE-2026-27880CGA-fj5r-r4px-6hrqCGA-gqqr-3fwx-cm8pCGA-h72r-2qfr-73hfCGA-pp5p-75qg-4mrrCGA-v3jh-3rgj-7vp4CGA-v4xx-8r2r-8cwwCGA-wm3f-2rx5-2xwrCGA-x7qr-6vrq-v44mCGA-2v6h-8m64-crcpCGA-2xc8-pv5v-6v46CGA-3xxh-jv8c-7m8rCGA-4gg8-4mv5-f8c5CGA-527c-5f9q-v2w2CGA-5f86-7j46-mmfpCGA-5ggw-j95m-89fmCGA-5m72-cw24-cp27CGA-5wfp-h9rc-wvj9CGA-62m3-jcxc-4g7qCGA-68xw-33j8-rhwhCGA-6jrr-m94f-5c4xCGA-6vr9-6438-6xx3CGA-76f2-jvwv-m4jgCGA-7h63-2wvx-4q5fCGA-83qm-7fv3-h883CGA-8598-28wj-hgjpCGA-85r3-qhr9-856vCGA-8cff-g4pp-v6j5CGA-8cpf-cx9w-x286CGA-8rr3-rrr3-w6j5CGA-944v-gxr9-xfw2CGA-9fw9-cc49-fjxgCGA-9qhw-f6wq-mq62CGA-c4g8-5mj2-xvp4CGA-c7mf-4ww5-7r9cCGA-cp55-85pg-xjgvCGA-cpqc-92cg-xfrrCGA-cx42-9xgx-8j97CGA-f2q6-8wc4-r9gjCGA-f8jq-48pm-4389CGA-ff55-gch7-rghvCGA-ffm2-g2x4-j6w8CGA-ffrx-532r-6689CGA-g4mh-gvg6-frv5CGA-ghh5-w92h-c456CGA-gmp4-g2m6-8jh4CGA-gmv9-6gp7-v3g3CGA-h7qr-rhw6-xcgvCGA-hp37-wjfh-7xhfCGA-hpqc-qh6v-g9wcCGA-hrx3-q57m-99vwCGA-j6h6-4whp-pg73CGA-j7j7-mc9h-gxw9CGA-jh63-6rj5-8458CGA-jjjq-57q9-vchwCGA-jpfx-8p8q-h6m3CGA-jrh2-mqcw-mr86CGA-jvp2-r596-m686CGA-jwg8-j3gj-v5p2CGA-m6q3-fxqp-3g26CGA-m8x2-gg2q-w739CGA-mpcq-pgqr-f7jhCGA-mx2g-9g2j-cfm6CGA-mxvx-jmff-f2phCGA-p74g-42mw-6gfqCGA-pjmr-j6r8-6542CGA-pjr9-fhxw-4hphCGA-pxw5-fr7p-wg7jCGA-q2fq-67j6-42f7CGA-q773-72vq-fg7xCGA-qgr4-ph3f-m592CGA-qwrh-72xc-mr9pCGA-qxrq-9rh6-g842CGA-rppc-2f6m-v8vqCGA-rww4-g632-7f2gCGA-v7hf-pgvq-j368CGA-wc4m-96h7-r9r6CGA-wj4v-6crr-94rqCGA-wmwj-g9qp-mqp4CGA-x5wr-x7qv-97f2CGA-x69j-p4hq-9q8cCGA-x9h2-4c24-fgp5CGA-xmqc-9p44-wxqcCGA-xr4x-9p67-qx93CGA-xrhm-phwv-h7q3ALPINE-CVE-2026-27880
Published 27-03-2026Last modified 27-08-2026
Vulnerability summary
CVE-2026-27880 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in grafana. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 56.1% of scored vulnerabilities.
Priority
Prioritisesevere
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.79%
0%100%
Low · +0.16 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 27-03-2026PublishedVulnerability first disclosed.
- 27-08-2026Last modifiedVulnerability information updated.
Description
The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.
CVSS metrics
6 scores · 6 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 6 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.79%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
Increase +0.16 pp
From 0.63% on 04-10-2026
04-10-202603-11-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Affected systems
Version check
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard12 products
- grafana-11.5< 11.5.10-r2
- grafana-11.6< 11.6.14.01-r2
- grafana-12.0< 12.0.10-r0
- grafana-12.1< 12.1.10.01-r2
- grafana-12.2< 12.2.8.01-r2
Alpine1 product
- grafana≥ 12.1.10, < 12.2.8-r0 | ≥ 12.1.10, < 12.4.3-r0
Grafana1 product
- grafana≥ v12.1.0, < v12.1.10 | ≥ v12.2.0, < v12.2.8 | ≥ v12.3.0, < v12.3.6 | ≥ v12.4.0, < v12.4.2 | < 12.1.0 | ≥ 12.1.10, < 12.2.0 | ≥ 12.2.8, < 12.3.0 | ≥ 12.3.6, < 12.4.0
Ubuntu1 product
- grafanaAll versions (No fix recorded)
Wolfi1 product
- grafana-12.3< 12.3.6-r1
5 vendors · 16 products
